Commonly called the iPhone "January '08 Update" and January Software Upgrade by Apple.[4]
Free update for iPhone.
Mail, Maps, Stocks, Weather and Notes apps for iPod Touch.
Recent calls contact details now show most recent call times.
Google Maps on iPhone gains the 'Locate Me' feature which can determine the phone's approximate location, using a combination of cellular triangulation and Wi-Fi data from Skyhook Wireless; also adds hybrid map support and the 'Drop Pin' feature.
Icons on the home screen can be rearranged and placed on multiple home screens (up to nine).
iTunes gift cards can be redeemed on the iTunes Store.
Movies downloaded through iTunes have chapter support.
Music has lyrics-support feature.
Web Clips can be added to (and subsequently removed from) the home screen.
SMS messages can be sent to multiple contacts using messages.
SMS storage capacity increased from 1,000 to 75,000 messages.
Default GmailIMAP setup for new accounts (previously was defaulted as POP3).
The clock timer now remembers the last used options (bug fix).
Incoming SMS messages now prompts the user to "Close" or "Reply" (previously "Ignore" or "Reply"). Pressing either option now marks the message as "seen".
Labels for contact data can now be deleted.
Applications on the phone no longer run as root; they run as the user "mobile" instead.
Ability to listen to music through a Bluetooth headset by going to the voicemail and choosing "Bluetooth" as the audio source no longer works (still works as long as phone is not locked or voicemail screen is active).
2.0, the second major release of the iOS, became available with the release of the iPhone 3G.
Devices running 1.x are upgradable to this version. This version of the OS introduces the 앱 스토어, making third-party applications available to the iPhone and iPod Touch.
Free for iPod Touch users who have upgraded to iOS 2.0.
Initial release on iPod Touch (2nd generation) (as 2.1.1).
Companion changes in/with iTunes 8 for this release
Displays capacity and used space of information on iPhone.[16]
Dramatically reduced time to back up to iTunes.[17]
Does not remove all media after restore.
Faster firmware installation and data sync.
Application updates downloaded from iTunes have new finder naming convention.
Bug fixes, performance enhancements
Security fix to prevent from bypassing the double home button exploit.
Fixed bugs causing hangs and crashes for users with lots of third party applications.
Faster installation and updating of 3rd party applications.
Updating applications keeps their icons in place on the home screen.
Improvements to Mail stability.
Improved email reliability, notably fetching email from POP and Exchange accounts.
Faster loading and searching of contacts.
Auto-correct now appears above the text instead of below (fixing a usability problem people were having where auto-correct would appear above the first row of keys).
Smoother browsing in Safari, particularly when scrolling up/down on a web page.
Significantly better battery life for most users.[17]
Decrease in call set-up failures and dropped calls.[17]
Improved accuracy of the 3G signal strength display.
Some Bluetooth headsets which didn't originally work with visual voicemail on previous firmware versions have been reported to be working on 2.1.[출처 필요]
The 12/24 hour clock which has been available in previous versions is now usable to UK iPhone users.[출처 필요]
Improved way of creating the "Application Map" on reboot fixes the "ALoD" issue.[출처 필요]
Third-party application settings are loaded after loading the main Settings.[출처 필요]
With the UK English keyboard setting, when entering URLs, holding down the '.com' button would bring up shortcuts to other TLDs, but for some reason it would drop '.net' to make room for '.co.uk'. 2.1 adds '.net' for the UK English keyboard.[출처 필요]
Apple have fixed the grammar in the App Store when all apps up to date. Before 2.1, the update page would display the text "All Apps Are Up-To-Date." (hyphenated with a period). The update page now displays the text "All Apps Are Up to Date".[출처 필요]
Double tapping (the standard gesture for zooming) didn't work in prior firmware versions in the Mail application. The only way to zoom into content (e.g. a HTML attachment/web page) was to use the 'pinch' method. 2.1 now adds the functionality of double tapping to zoom in the Mail application.[출처 필요]
Triple-click on the control button of headphones now jumps music to previous track played.
SMS app can alert up to two additional times if you don’t acknowledge an incoming text message (will play the alert sound/vibrate again after a period of time as if a new message just came in).[16]
When receiving a text message, it used to display "Sender — Text Message" when the message preview was off (e.g. "Pete — Text Message"). Now just displays "New Text Message".[출처 필요]
Update supporting languages.
Option to wipe data after ten failed passcode attempts (after 5 attempts, the device will disable itself for 1 minute. After the 6th attempt, it will disable itself for 5 minutes. In the 10th attempt, it will wipe all data).[16]
The camera can now be turned off within the restrictions page.[16]
When taking a screen-shot of your phone, there is now the camera shutter noise.
Pause apps by clicking the icon while it downloads/installs.[출처 필요]
Updated apps now keep their original position in the Home Screen.[출처 필요]
iPod volume/application volume setting is now independent of the phone ringer volume setting.[출처 필요]
iPhone never gets locked when placed in dock and play music.
New application features
Genius playlist creation.
More information provided within iPod Music lists (artist and album are now shown below song title when selecting music in addition to remaining time on podcasts).
More information is provided for audiobooks, such as displaying time left in active audiobook.[16]
New podcasts & videos had "filled" blue bubbles next to them to indicate that they were new, now if you have "half-played" a podcast or video, it will include a half filled blue bubble.[16]
Sound from iPod now "fade out" if you start syncing device with iTunes.[18]
Options to load & display earlier text message in a conversation.[출처 필요]
EXIF data information now remains on photos/pictures when emailed from your iPhone. Sites such as Flickr are now able to show geotag and other information.[출처 필요]
When location services is switched off in the Settings menu, the Maps application reminds you to manually turn it back on from the Settings menu when using GPS. Originally, you would have the option to turn it on when the notification appeared.[출처 필요]
Bookmarked home screen apps open in full screen.[19]
iPod Touch only
Settings for individual speaker sounds. Sounds can no longer be turned off en masse. All sounds must be turned off individually to mute sounds.
3.0 became available with the iPhone 3GS. It was released on June 17, 2009. This release added features such as copy and paste, and MMS. Not all features were available on the original iPhone. Devices running 2.x were upgradeable to this firmware.[28][29]
Features iPhone users got in 2.2 now added for the iPod Touch (e.g. Google Street View, public transit and walking directions, display address of dropped pin, share location via email, and cache of recent locations). Changed behavior when routing directions and showing steps.
Stocks
Landscape mode that enabled viewing detailed price and change information by dragging one or two fingers across the full-screen chart.
Metadata display for detailed information about the symbol, including full company/fund name, market capitalisation, price to earning ratio, dividend yield, and statistics about the day and year price range.
Table of news stories from various internet sources related to the selected symbol.
YouTube
Can now log into account.
View subscriptions, Favorites, My Videos, History, and Playlists
Comment on videos, rate videos
Phone
Recent Calls now show more details (call length, etc.).
Ability to change/set "own number" (my number) in the SIM card. Will be displayed in the Contacts list and iTunes, as well as possibly used for MMS identification.
Camera now has a thumbnail of the previous photo captured. The thumbnail also acts as a shortcut to "Camera Roll" allowing for view/delete of photos without exiting the camera app.
Camera now has autofocus. To change what is being focused on, simply tap on what you wish to now have the camera focus (iPhone 3GS only).
AVRCP: Play/Pause/Stop for iPod app (no Next/Back yet).
Device side audio control still enabled but does not affect audio stream.
PBAP: wireless phone book access (for use with vehicle head units).
PAN: personal networking for tethering and ad-hoc connections between mobile devices (multi-player gaming).
iPod
Shake to shuffle songs in iPod app.
Search through iPod.
Scrubbing through tracks can now be done at 4 variable rates as user moves finger down the screen, and the speed is displayed on screen ("Hi-Speed", "Half Speed", "Quarter Speed", "Fine").
(When Bluetooth is enabled and a paired audio device is present) Audio output menu added to "Now Playing" screen and Home button iPod controls.
Location dot while playing video/music now glows while you scrub the track/video.
Podcasts
More details shown: time remaining, etc.
Can be played at "½x", 1x, or "2x" speed (actual speeds are 0.8x, 1x, and 1.5x).
Can now sign out of iTunes account and use a different iTunes account.
iTunes account info can be accessed and edited.
Can now read and write reviews for content on iTunes.
Movies, TV shows, audiobooks, and iTunes U content can now be purchased on iTunes Wi-Fi store.
Notes syncing.
Voice memos syncing (audio files added to a "Voice Memos" playlist).
Backups can now be encrypted and password protected.
Tethering over USB and Bluetooth (depends on mobile network ability).P2,P3
USB tethering auto activated when connected to USB on iTunes 8.2+ (if tethering is enabled in iPhone settings and by phone's carrier).
iTunes 8.2 now includes a USB driver for iPhone tethering.
Full access to iPhone possible while tethered.
(In Windows) iPhone shows up as a standard ethernet connection.
Accessibility settings (for the visually/aurally impaired) (iPhone 3GS only).[35]
VoiceOver gesture-based screen reader. Touch screen to hear a description of the item under your finger, then double-tap, drag, or flick to control iPhone. Speaks 21 languages and works with all apps.
Zoom, magnifies entire screen on any app up to 5 times normal size. Move left, right, up, and down to view any portion of the screen close-up.
White on Black, changes display to white on black (instead of the normal black on white), works in any app, and alongside with Zoom and VoiceOver.
Mono Audio, if users hearing is limited in one ear, routes both right- and left-channel audio into both earbuds, so you can hear both channels in either ear.
Speak Auto-text, works with VoiceOver to automatically speak auto-corrections and auto-capitalisations.
Other
Device automatically connects and authenticates to Wi-Fi hotspots which need username and password (e.g. Starbucks, McDonalds).
Locate Me for the iPod Touch accuracy improved.
Restrictions have been updated and now block "Current Location" and allows setting what content is appropriate for iPod music/videos/TV shows and apps.
11 home screen pages instead of 9. Now can store 180 apps (including native applications. i.e. Phone, iPod, Safari).[36]
Speed optimisations during keyboard input and use of the included App Store application.[출처 필요]
Voice control (ability to voice dial and control iPod).P3,T3
Holding the home button will no longer force quit an unresponsive application. To force quit an application in 3.0 hold the sleep/wake button until the red power off slider appears. Then hold down the home button to quit the unresponsive application.
Screen captures are no longer numbered separately from photos taken with the camera application; all new images in the camera roll now use a common numbering sequence.
On iPod Touch (2nd generation) the Voice Memos app now successfully records audio if you plug your microphone after you have started the application.
Numbers inside Notes have more options when tap and hold is triggered: Call, Text Message, Create New Contact, Add to Existing Contact.
Voice control over Bluetooth is now available, allowing users to initiate calls and control music playback via Bluetooth headsets (however, voice control while plugged in to car audio systems no longer works).
APIs allow third party apps to access videos and edit them.
Gives programmers their choice of video recording quality.
A pair of new app interface classes that are known to relate to graphics, but which haven't had their functions identified.
New camera APIs.
Calendar event alerts will be shown also with a pop-up, much like push notifications.
Xcode 3.1.3 has also been released and is said by people aware of the update to improve facilities for creating a new project as well as setting a target configuration.[출처 필요].
Enables connectivity to devices for developmental purposes wirelessly instead of requiring tethering via the dock connector.
Ability to save videos from Mail or MMS.
Ability to copy and paste full quality videos from camera into email.
Includes new frameworks for recognizing custom gestures, custom keyboards etc.
Allows display output to an externally connected display for compatible 3rd party apps.
Allows user to change home screen background.
Adds Terrain view in Maps application.
Location-based services rely on Apple's own databases instead services of Google and Skyhook Wireless.[41]
Allows transferring files between a computer and the device for a shared (per app) document store that all applications can access (iOS file sharing). Only available for the iPad.
Allows use of Apple Bluetooth keyboard (possibly other keyboards).
Includes a built-in dictionary which can be used in iWork and iBooks (possibly other apps too).
The Dock is now able to hold up to six icons.
The iPod app allows the user to create and name custom playlists.
Safari's new thumbnail view allows the user to navigate to up to nine active pages (similar to Top Sites on Safari for Mac OS X).
Places in the Photos app allows the user to view their photos by location (needs iPhoto '09).
iOS 4 was made available to the public for the iPhone and iPod Touch on June 21, 2010. This is the first major iOS release to drop support for some devices. It is also the first major iOS release that iPod Touch users do not have to pay for.
The iPhone 3G and iPod Touch (2nd generation) have limited features, while the iPhone 4, iPhone 3GS, iPod Touch (3rd & 4th generation) have all features enabled, such as multitasking. The iPhone and iPod Touch (1st generation) cannot run iOS 4.0 and above.
iOS 4.2.1, released November 22, 2010, added iPad compatibility. It also was the last version to support iPhone 3G and iPod Touch (2nd generation, MB & MC models).
Table of versions: iOS 4.x – portable iOS devices
Version
Build
Baseband
Release date
Features
iPhone (3G and higher) and iPod Touch (2nd generation and higher)
Improved AVRCP, adds support for Next and Previous.[출처 필요]
Enables FaceTime call connection via email contacts (e.g. for iPod Touch (4th generation) users who won't have a phone number) and through favorites.[48]
Check spelling can be turned off in Settings.[출처 필요]
iOS 4 features for iPad (multitasking, folders, etc.).
Up to 4,400 icons instead of 220 (20 apps a folder).
Updated carrier signal strength display (3G iPad only).
Increase in the length of the smaller signal bars.
The method in which signal strength is calculated has been enhanced.
Additions to the multitasking tray.
Brightness.
Volume control.
AirPlay controls.
Screen rotation lock switch.
Physical iPad screen rotation lock switch is converted into a sound/silent switch in iOS 4.2 (just like on the iPhones), with a virtual screen rotation lock switch added to the multitasking tray.
More than 30 new keyboards and dictionaries, including Arabic, Greek, and Hebrew.
Fixes glitch that can let a user get into the Phone app while the phone is locked via "Emergency Call" by dialing a random number and quickly pressing the lock button after dialing that call.[59]
Fixes the alarm bug caused by daylight saving time changing, affected on a part of iPhone and iPod Touch owners living in various countries.[60]
Improved iPhone 3G and iPod Touch (2nd generation) performance.[61]
Ability to cancel and delete an app which is currently downloading. Before iOS 4.3, it was only possible to delete an app which had already downloaded.
Stream from an iTunes library to iOS using Home Sharing.
In-app purchases always ask for a password, even if one has previously been entered.
Internal system clock gets network time updated more frequently via NITZ (part of the official GSM standard since phase 2+ release 96) and gives a more accurate time for the device, it updates about every five days.
iPhone only
Personal Hotspot feature (Wi-Fihotspot with up to 5 simultaneous devices (Wi-Fi hotspot iPhone 4 only[63])) on supported carriers.
Ability to set amount of times a text tone repeats (up to 10 times).
In field test mode refresh button has been removed & updated information has been displayed in bottom of the screen (it updates every 4–6 seconds).
Slideshow options moved to Photos app.
New look for taking a picture for a Contact.
When receiving a text message, the iPhone now vibrates 2 times.
All notifications concentrated to Notification Center: swipe downwards from the status bar to open it. Notification center shows a list of all notifications and widgets (widgets available only on iPhone & iPod Touch).
Notification order can be arranged.
Choose Notification Type: Banner notifications, the classic pop-up notifications, or no notification at all (selectable on an app-by-app basis).
Notification list on lock screen. Swipe an icon to unlock and go to the specific notification.
Notifications announcing earthquakes with 2 minutes early (only in Japan).[67][68]
Messages
Messaging between all iOS devices running iOS 5 through Wi-Fi or 3G. Allows to send text, photos, videos, contacts, and locations.
All iMessages and conversations will be synced between all iOS devices linked under a single Apple ID. You can start a conversation on one device and continue it on another.
Can message between multiple people simultaneously (group messaging).
Shows when other person(s) is typing.
Delivery receipts.
Optional read receipts (enable in Settings).
Animated GIF image support for iMessage.
Ability to set how many times an alert will be shown when a new message is received (ranges from once to ten times).
The name of the person that responds appears in small light blue text directly above the response when SMS is sent to a group.
Slight redesign for text messages. Font & time-stamp layout.
Hide keyboard; hidden by downwards scrolling in message screen (after being used to type a message). Unhidden again by tapping in text entry field.
A new icon on SpringBoard, which opens to an iBooks-inspired folder which shows all papers and magazines downloaded from the App Store.
Subscriptions to newspapers and magazines available for browsing and downloading in a dedicated section of the App Store, stored in the Newsstand folder.
Reminders
"To-Do list" functionality in Reminders app.
Date-based reminder notifications.
Location-based reminder notifications that can be set to when you leave, or arrive a specified area (iPhone 4 & iPhone 4S only).
Twitter integration
Tweeting from native applications: Photos, Camera, YouTube, Maps, and Safari using new Tweet Sheet which supports multiple accounts.
Music
iPod app renamed to Music (iPhone & iPad only; was already named Music on iPod Touch).
iPod app now split into Music and Videos (iPhone only; was already split on the iPad & iPod Touch pre-iOS 5).
Video podcasts can only be found in the Videos app.
Ability to play content while the device is synchronizing with iTunes.
Ability to delete songs from device (by swiping over the corresponding song).
Tap and hold on a song to view extended song information (iPhone & iPod Touch only).
Long names scrolling in now playing.
Album artwork now displays in full resolution (Retina Display only) on Now Playing screen.
Broadcast song information on devices (e.g. car stereo) when connected over Bluetooth.
Improved Sound Check for Music.
“Group by Album Artist” option for Music.
iTunes Store button has been added to the Music app.
Removed ability to view lyrics (on iPad).
Camera
Volume-up key as shutter release button to take photos (also works using headphone remote volume up button). Also works for starting/stopping recording of videos.
Shortcut to Camera app from lock screen, accessed by double-clicking the home button (iPhone & iPod Touch (4th generation) only).
Grid composition aide (3x3).
Spread to zoom-in, pinch to zoom-out.
Swipe left to reveal camera roll.
Tap and hold to lock/unlock Auto Exposure and Auto Focus.
Options button added, HDR toggle and Grid composition aide toggle.
New Camera button on Photos app that returns to Camera instead of a "Done" button (was on OS before this) to close the Camera Roll.
Face detection and video stabilisation (iPhone 4S only).
Maps
Print maps.
Alternate routes.
Traffic.
Calendar
Can now create, rename, and delete calendars right on the device.
Tap and hold or double-tap to create a new event.
Tap and hold in "all-day events" to create a new all-day event.
Drag appointments to a new time slot.
Drag handles to change start and end times.
Creating new Event, now an "Invitees" field; takes to screen for multiple email address entry, emails sent to all invitees once event is saved.
Invitee can “Accept”/“Decline”/“Maybe”; reply sent to iCloud servers then reflected for all invitees to see.
Calendar event on device lists those invitees accepting event.
All users on iOS 5.x devices get notification when event is nearing.
Ability to specify a time zone to events.
Ability to add URLs to events.
Current time on Calendar if in landscape mode.
Navigate in day view by swiping.
Event attachments can now be viewed directly in the app.
Share calendars through iCloud with friends and family. Edits made by subscribers to that calendar are updated and pushed to other subscribers of that calendar (can be disabled by the creator of the calendar and locked so others cannot make edits).
Japanese or Buddhist calendars support.
Mail
Rich text formatting (bold, italics, and underline).
Indentation control.
Ability to mark multiple mail items as read.
Ability to flag emails.
Draggable mail address in the recipients field.
Alert if the subject line is blank.
Search now includes body of messages.
Delete mails while in Airplane mode.
Exchange Activesync Email can now be deleted offline.
Can create new email folders.
Mail sidebar.
S/MIME support.
Ability to show 1000 recent messages; 25 message option removed.
Ability to create additional @me.com email address within the Mail settings.
Ability to increase quote level in Mail settings.
New and updated tiny icons on Mail for Windows Live Mail, Gmail, Exchange, etc.
Hotmail accounts now have new icons and folders.
While reading an email you can swipe right to open a list of messages and swipe left to bring back the open email message again.
If you have multiple email accounts configured in Mail.app, swipe left or right from one’s mailboxes folder list, it will take you to another account’s mailboxes.
Support for three popular Chinese email services: Tencent’s QQ Mail, and Netease’s 163.com & 126.com mail inboxes.[69]
Photos
Built-in basic photo editing: crop, red-eye, auto-enhance and rotate photos.
Ability to create and edit local photo albums folders (only those that aren't synced with iTunes).
Ability to sync pictures taken on one iOS device automatically with other iOS 5 devices using Photo Stream.
Ability to select all when adding pictures to an album.
Slight re-design for video time-line under Photos app.
Safari
Safari Reader: new "Reader" icon appears in address bar if Safari detects a webpage article, removing need to click-through to each page. Scrollable window sheet appears over current webpage showing all article pages together separated by page breaks, removing ads and page clutter.
Ability to change font size in reader mode.
Reading List: a new area of the bookmarks window has been added, purposed for pages you might want to read later. New pages can be added from a new option in the action menu or when long-pressing on a link.
Items from the Reading List can be synced to iCloud to be pushed to all of your other iOS devices.
Safari bookmarks can be synced to iCloud.
Ability to open pages in background or in new page (change in Settings).
Ability to replace a word with a word from a list of similarly spelled words spellings when typing in a text box on a web page.
Private Browsing; interface colours change from blue to black (change in Settings).
Ability to remove custom website data.
CSS fixed position support.
Slight fade out at end of long URLs (instead of ellipses) in the address bar.
iTunes, iBooks (books & progress), App Store, Photo, Contacts, Calendar, Notes, Reminders, Mail, Safari (bookmarks & Reading List), Settings, app data, iWork, and backup data; saved in iCloud to automatically or manually download to all linked devices (iOS & Mac/Windows PCs).
All iMessages and conversations will be synced between all iOS devices linked under a single Apple ID. You can start a conversation on one device and continue it on another.
Backup homescreen layout on iCloud.
Document sync.
Ability to buy more storage.
Free upgrade to 256 kbps bit rate for iTunes purchased songs if backing up on iCloud.
File names in iCloud Storage are case-sensitive.
Documents/data can now be selected to sync with iCloud account.
Option to disable iCloud Sync via cellular network to save cost, especially if roaming.
Points in Game Center: shows you how many points you have on the home screen of Game Center.
Sort and view Friends on the basis of Points.
Friend recommendations.
Game recommendations.
Games can be purchased from within Game Center.
New Friend requests screen.
Native support for turn based games.
Settings
Help Center: learn more about every option under settings app to explore more about it.
New menu under Location Services called System Services where certain services can be toggled on or off (such as setting the time-zone, location-based iAds, Diagnostics, etc.).
Hearing Aid Mode.
Ability to rename your device.
Ability to set up an AirPort base station or Time Capsule devices.
Ability to organise Notification Center items "Manually" or "By Time".
Can select which apps can be included in Notification Center.
Can select which type of notification will be used for each app: banner notification, classic pop-up style notification, or no notification.
Ability to turn off app badges.
On the "Ringtone" and "Text Tone" page, instead of showing "new", they are all in one category now.
Custom sounds for New Message, New Voicemail, New Mail, Sent Mail and Reminders alerts.
Ability to purchase text, email, and voicemail alert tones.
Under "Mail, Contacts, Calendars", on the bottom it shows "Reminders" and gives an option to Sync.
In the "Messages" section, the "Alerts", "Show Preview", and "Repeat Alert" options have been removed.
The Usage screen is improved and now shows how much of the memory is consumed by each app.
Storage usage clean up.
Backup to iCloud shortcut added.
Photo Stream settings.
New purchases Settings; automatically download new purchases made on other devices (for music, apps, and books). This can also be enabled or disabled for use on cellular when not connected to Wi-Fi.
Twitter sign-in OS-wide with support for multiple Twitter accounts.
Ability to set left or right for mono audio.
Ability to turn on/off sending of iOS diagnostic data to Apple.
Keyboard
Ability to create keyboard shortcuts to replace custom phrases. By default includes “omw” which expands to “On my way!”.
Emoji keyboard no longer requires an app to enable it (regarding non-Japanese devices).
Define your own words in Offline Dictionary.
New keyboard with prominent # (hash-tag) and @ (mention) buttons for Twitter app similar to the ".com" button when entering an address into the Safari address bar.
New Chinese-Pinyin keyboard spreading.
Quick Chinese input method.
List of associated words show on the top of Chinese input keyboard.
Function to convert voice to text (iPhone 4S only).
PC-Free
iTunes/USB no longer needed to activate new devices via a computer.
New welcome screen when using the device for the first time (or after resetting a device).
Ability to start fresh with no need to tether it to iTunes. Option to restore all data on a device from an iCloud backup through a simple iCloud sign in.
Ability to wirelessly sync to iTunes over Wi-Fi added (an initial tethered sync is needed to pair them together and the setting must be enabled in iTunes).
OTAdelta updates: from iOS 5 forward, devices can now self-update the system software right on the device itself through Wi-Fi or 3G; no iTunes or computer needed.
YouTube
Ability to play 480p/720p videos over 3G (iPhone only).[70]
Scrolling titles for YouTube videos.
Seek bar fine scrubbing visual notification has been added.
FaceTime
Improved video quality.
Ability to set your FaceTime caller-ID to be your email or your phone number.
Ability to mirror the FaceTime call on large screen.[71]
iTunes/App Store
iTunes Tone Store.
New Purchased History section.
Genius support for finding songs and apps similar to ones users have purchased previously.
Ability to completely disable in-app purchases.
iTunes password prompt.
Restrictions with password needed for purchases if enabled.
Shows "Install" instead of the price for previously purchased apps. Shows "Installed" for installed apps.
Additional “iForgot” button on App Store if a user has forgotten their Apple ID password.
Simultaneous app downloads.
Custom tones for almost everything under "Sounds" with "Buy more tones" button.
Music app now has a "Store" button that goes to the iTunes Store.
Contacts
Add family relations ("related names") to contacts.
Add social media info into contacts.
VoiceOver
VoiceOver item chooser.
VoiceOver action support.
Arabic language support for VoiceOver.
Option to speak text selection.
New voices for VoiceOver.
Bluetooth
AVRCP 1.4 supported (sends track and artist info to supported devices).
Minor improvements/bug fixes
New rounded UI switch graphic.
Ability to use the device while syncing.
Spotlight search now includes Reminders and searches through Messages.
Built-in system-wide dictionary; in the typical Cut/Copy/Paste pop-up when selecting text, there is a new option to "Define". Define brings up a view with definition of the selected word.
Ability to delete app data.
Fixed a bug that caused a song to crash for a second while switching to another application in the multitasking tray.
Apps fade to home screen when they crash, rather than flicking off.
Option to automatically set the time (new for Wi-Fi only devices).
Switching the ringer switch to "on", the indicator now shows the volume level bar (iPhone & iPad only).
Screenshots are saved using the device's orientation (previously, all screenshots were saved as if the device was in portrait mode).
Hindi virtual keyboard based on standard InScript layout.
iPhone & iPod Touch only
Notification Center
Option to display Stock & Weather widgets in Notification Center. Swipe weather left or right to get five day forecast.
Final support released on the iPad 2 (32GB and 64GB models)
Attempted to fix battery drain bug.
Fixes bugs affecting iCloud mail push.
Adds Multitasking Gestures (for original iPad).
Resolves bugs with Documents in the Cloud.
Improves voice recognition for Australian users using dictation.
Contains security improvements.
Activates the LED camera flash, whether the speaker is muted or not, for incoming calls and messages, when activated within the Accessibility sub-menu.
Introduces a new way for developers to specify files that should not be backed up.
Build 9A406:
Attempts to fix "Invalid Sim" and "No SIM card installed" issues (on iPhone 4S).
iOS 6 was previewed on June 11, 2012 during WWDC 2012, with release announced for Fall 2012. Following the pattern of previous iOS releases, older devices are no longer supported, specifically the iPod Touch (3rd generation) and the iPad (original). Supported devices on this release include the iPhone 3GS onwards, the iPod Touch (4th generation) onwards, and the iPad 2 onwards.[76]
On September 12, 2012 at San Francisco's Yerba Buena Center for the Arts, amongst other items unveiled, Apple announced three iOS related items; the release of the next generation of iPhone, called iPhone 5, the newly redesigned iPod Touch (5th generation), along with the final release of iOS 6.0.[77]
iOS 6 was released to the public through iTunes and over-the-air updates on September 19, 2012.
Siri (iPhone 4S and later, iPod Touch (5th generation), iPad (3rd generation) and later, & iPad Mini only)
Siri now available on iPad (3rd generation) and iPod Touch (5th generation).
Additional country and language support for Canada (English and Canadian French), China (Mandarin), Hong Kong (Cantonese), Italy (Italian), Korea (Korean), Mexico (Spanish), Spain (Spanish), Switzerland (Italian, French, German), Taiwan (Mandarin), US (Spanish).
Siri can provide information on movies like find movie reviews, ask about actors and actresses, play a movie trailer, get showtimes for movies and find a theater/cinema.
Yelp! built-in reviews and launch to open up more information and create reservations with OpenTable.
Restaurants are listed by reviews and nearest with more information.
Apps can be launched by saying "run <app name>" or "open <app name>".
Siri can send Tweets and update Facebook status.
Siri can read items from Notification Center.
"Eyes Free", allowing car companies to build-in Siri integration; with a mic button on steering wheel, and for launching Siri functions, and screen disabling during Eyes Free mode.
Message previews can now be toggled on/off for alerts.
Calendar now shows the current date in the title bar.
Shows ending times for Calendar events.
Added "Do Not Disturb" for Notifications. (See Settings, below, for more information)
Photos
Shared Photo Streams. Photos can be shared with other contacts. Photos shared can be commented on and liked. Notifications are enabled for when a contact shares a photo with the user.
New sharing menu using new icons. Has options for Twitter (with new icon), Facebook, Weibo (when Chinese keyboard is enabled), as well as Copy, Use Wallpaper, Print.
Videos can be uploaded to Youku and Tudou when the Chinese keyboard is enabled.
Constantly shows a button to create new Albums.
Music
New streamlined UI with white and black themes.
Late Night Mode equaliser.
Settings
"Bluetooth" moved to top of Settings list.
Added "Do Not Disturb" mode, allowing users to avoid calls and notifications unless calling parties are on the user's Favorites group. A crescent moon icon will appear in the status bar when enabled. Has no effect when the screen is on.
New Privacy Controls. Apps must now ask for permission to access the users photos, calendars, contacts and reminders.
Revised Settings icon, similar to that of the OS X System Preferences app icon.
New gear animation in the Settings app shown whilst downloading an over-the-air update.
Usage: Time Since Last Full Charge now available for all devices.
Enable 3G under Cellular setting (iPhone).
Maps menu for changing voice volume, map label language, label size, and distance units (iPhone 4S and later, iPad 2 and later, & iPod Touch 5th generation).
Settings categories now separated into groups on iPad.
"Advertising" option added under "About", just above "Diagnostics & Usage" to enable or disable advertising networks from serving you "targeted ads".
Phone
Adds phone icon on lock screen for additional ignoring options, similar to the camera sliding icon on the lock screen in iOS 5.1.
When ignoring a call, the user can message the caller or set a Reminder to call them back later or send one of three customizable quick SMS response.
Phone call doesn't take up the entire lock screen when a call is incoming.
Turn-by-turn Navigation with Siri Voice powered by TomTom (iPhone 4S and later, iPad 2 and later, & iPod Touch (5th generation)), voice directions (iPhone 4S and later only).
Maps are now Apple-sourced instead of using Google sources.
3D overview for maps (iPhone 4S and later, iPad 2 and later, & iPod Touch (5th generation)).
Satellite view.
Flyover view for maps gives 3D satellite view (iPhone 4S and later, iPad 2 and later, & iPod Touch (5th generation)).
New Map icon.
Lock Screen integration for turn-by-turn navigation (iPhone 4S and later, & iPad 2 and later), voice directions (iPhone 4S and later only).
Yelp! integration available for businesses provides reviews and information on the business. Allows the user to launch Yelp! app from Maps.
Info cards of businesses.
Traffic crowd sourcing with anonymous data sent from all iPhones, also adds events of traffic slow-down. Re-routing around traffic accidents and road work.
Tapping search bar will automatically give you directions from current location to back home, can be changed.
Fullscreen landscape mode (for iPhone and iPod Touch).
iCloud tab syncing across iOS devices and Macs.
Offline reading list caches the user's reading list for later use, even when not connected to the Internet (not available for iPhone 3GS and iPod Touch (4th generation)).
Smart App Banners: Banners on mobile webpages prompt users to download the website's native App Store counterpart in the App Store.
Faster JavaScript engine.
Apps in search results.
Support for photo upload via Camera Roll to web forms with <input type="file"> elements.
Support up to 25 open tabs on iPad.
Bookmarks window now displays tabs along the bottom of the window for switching between viewing "Bookmarks", "History" and "Reading list"; previously was just listed all in one source list (iPad 2 and later only).
Bookmarks button changes to Reading list icon with a progress bar when updating the Reading list for offline use (iPad 2 and later only).
Long press the "Back" or "Forward" button to reveal the browsing history (for iPhone 3GS and later, iPod Touch (4th generation) and later. Previously only available for iPad since iOS 5.x).
Lost Mode: If an iOS device is lost, Lost Mode triggers an attention grabbing sound, prompting the person who finds the iPhone to call a specific number set by the owner remotely.
Additional features for China (Baidu search engine replaces Google, etc.).
The Alarm feature of the built in Clock app in the iPhone and iPod Touch has been plagued by major bugs in all versions of iOS 4. The first bug noticed was the "DST bug" which was first seen when some countries switched to/from daylight saving time from/to standard time in October/November 2010.[80][81] It caused recurring alarms to start going off an hour too early or late. Apple promised the bug would be fixed in iOS 4.2 but according to some reports it still exists even in iOS 4.3.1.[82]
The second alarm clock bug discovered was the "New Year's Day bug" which showed up on January 1, 2011 as well as January 1, 2012. It caused non-recurring alarms not to go off at all.[83] However two days after each New Year's Day, on January 3, they "magically" started working again. This bug was seemingly fixed in iOS 4.3.[84]
iOS 5.x: battery, Wi-Fi, SIM card, and echo bugs편집
Apple has confirmed that several battery life bugs are negatively affecting battery life in iOS 5.[85] They attempted to fix these bugs with iOS 5.0.1 but the problem still remained.[86]
The launch of the iOS 5 update on October 12, 2011 (including iOS 5.0.1 released on November 10, 2011) led many users to report a major bug causing the device to lose Wi-Fi access. This problem has supposedly been fixed with the release of iOS 5.1.1[87][88]
Some users of the iPhone 4S and iPad reported issues with the SIM card in the initial release of iOS 5,[89] and even though Apple attempted to fix these issues in version 5.0.1 build 9A406 (for iPhone 4S only), they still remain.[90]
Some users of the iPhone 4/4S reported issues with having echo problems during phone call in the initial release of iOS 5, which causes echoes to appear randomly during phone calls made through earphones. The other party in the call is generally unable to hear the conversation due to this problem.[91] The owners reported a "fix" that is to switch to speaker mode when echo happens then switch back (turn speaker off), which would get rid of the echo temporarily, but it might happen again within the same phone call. It is unclear that whether Apple attempted to fix this issue in version 5.0.1, but for many users this problem still remains after updating to 5.0.1. It appears that the new noise-cancelling microphone/technology might be the reason behind this bug.[출처 필요]Apple has since released version 5.1.1 in an attempt to fix the problem.
Apple has admitted that there were several bugs in the mapping app on iOS 6, with cities in the wrong location, some places being missed off altogether, some places misnamed and places of interest in the sea.[92][93][94]
Many users report a problem with Bluetooth audio streaming to a range of compatible devices. The sound cuts out every now and then for no apparent reason. 2012년 10월 기준[update], no solution has been provided by Apple.[95]
Location-based reminders do not work for iPads, even though they were promised to work on cellular enabled devices.[96].
↑“Apple Introduces the New iPhone 3G”. 《Apple》. 2008년 6월 9일. iPhone 2.0 software will be available on July 11 as a free software update via iTunes 7.7 or later for all iPhone customers
↑ 가나“HQ videos on YouTube over 3G”. iPhonedownloadblog.com. 2011년 6월 8일. 2011년 6월 8일에 확인함.인용 오류: 잘못된 <ref> 태그; "AppleOS5Features"이 다른 콘텐츠로 여러 번 정의되었습니다
이 부분의 본문은 iOS 5입니다.
