What is the difference between ios 4.3 and 5.1

SwiftUI includes: Design tools read and write the same code you edit by hand for a single source of truth Declarative syntax defines your user interface as easy-to-read Swift code Animations are built using simple commands that describe the action you want to see Library of controls and modifiers make it easy to design and build complex interfaces Share common UI code across all Apple platforms, and add custom experiences for each OS Previews show an exact rendering across various device types and accessibility settings Interact with your interface live in the design canvas, or on an attached device Hot-swap your edits into a live view of your app to instantly see and interact with changes SwiftUI requires iOS 13, watchOS 6, tvOS 13, or macOS Catalina.

Xcode 10 Xcode 10 looks amazing in combination with Dark Mode in macOS Mojave, and makes it easy for you to adopt the new look in your macOS apps as well. Dark Mode Interface and Mac App Support All-new dark appearance throughout Xcode and Instruments Asset catalogs add dark and light variants for custom colors and image assets Interface Builder switches between dark and light previews of your interface Debug your Mac apps in dark or light variants without changing OS settings Source Control Changes in the local repository or upstream on a shared server are highlighted directly within the editor.

Changes not yet pushed to the shared repository. Upstream changes others have made. Conflicts you should address before committing. Support for cloud-hosted and self-hosted Git server offerings from Atlassian Bitbucket, as well as GitLab to go along with existing GitHub support. Xcode offers to rebase your changes when pulling the latest version of code from your repository.

SSH keys are generated if needed, and uploaded to service providers for you. Editor Enhancements Place multiple cursors in your code editor to make many changes at once.

Code folding ribbon can now hide any code block surrounded by braces. Over-scroll makes it easy to center the last lines of code in the middle of your screen. Run your code up to any specific line, or type shift-return to run the code you just added.

Import the Create ML framework to interactively train new models, and then write code to test the model right in the playground. When finished, drag the model into your app.

Testing and Debugging Debugging symbols are downloaded from a new device five times faster than before. Xcode will spawn a collection of identical Simulators to take advantage of your multi-core Mac, and fan tests out to run in parallel, completing your test suite many times faster.

Run tests in random or linear order. Instruments automatically show OSLog signposts you add into your code. Build and share your own custom instruments package to provide unique data visualization and analysis for your own code.

Memory debugger uses a compact layout to make it easier to investigate your memory graph. Metal shader debugger lets you easily inspect the execution of your vertex, fragment, compute, and tile shader code. Home button double-click shortcut to phone favorites or music controls. Spacebar double-tap shortcut to intelligently insert period and space ". Mail attachments are viewable in portrait and landscape modes.

Stocks and cities in Stocks and Weather can be reordered. Apple Bluetooth Headset battery status in the Status Bar. Support for TV out. New Passcode lock time intervals.

Adjustable alert volume. New interface for the Calculator application. Battery charge level shown in iTunes. Patched the TIFF security bug. Adds custom ringtone field. Bug fixes. 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. 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, to 75, messages. Multi-touch keyboard e. The clock timer now remembers the last used options bug fix.

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.

Bug fixes and enhancements. SMS scramble order fix. More carriers names now fit without scrolling for roaming on other carriers.

The camera's frame rate dramatically improved. Interface speed improvements. July 11, [ 13 ]. Initial release on iPhone 3G. Added language support.

Support for Traditional and Simplified Chinese handwriting recognition. Mail, contacts, calendars Grouped settings. Mail Push e-mail. Ability to select an outgoing email account within Mail application. Ability to view MS Office attachments. Ability to view iWork attachments, including Pages, Numbers, and Keynote. Ability to search contacts. Global Address List. Push contacts. Ability to import SIM contacts.

Calendar Multiple calendars supported in Calendar with colour-coding desktop colours only preserved if using Mobile Me. New "Calendar" menu in "Settings". Enterprise enhancements Enforced security policies. Device configuration. Remote wipe. Sound fade-out when exiting a video.

Other App Store to manage third-party applications with home screen icon- Store for apps. Certificates and Identities. Ability to turn Wi-Fi back on while in Airplane mode. Ability to take screen captures. Ability to save pics from Safari or Mail to Photos. Support for SVG. Addition of Parental controls. Password letters are momentarily visible while typing.

Ability to turn Location Services on or off. Applications that use Location Services now prompt user for confirmation 3 times. Tapping status bar to scroll to top shortcut. Updated calculator with extra features in portrait mode, a scientific calculator in landscape mode and an updated icon. Updated iTunes with a new icon and reordered category icons within iTunes application. Camera now supports Geotagging.

Bug fixes Performance and stability of Contacts and Calendar applications dramatically improved. Performance while flipping to landscape mode in Safari improved. Performance in Mail app improved. Release improves application crash rates. Keyboard responsiveness improved. Bug fixes Improved communication with 3G networks. The "Update All" button in the App Store's update tab has been removed. September 9, T1 September 12, P1 , P2. Free for iPod Touch users who have upgraded to iOS 2.

Initial release on iPod Touch 2nd generation as 2. 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.

Significantly better battery life for most users. Some Bluetooth headsets which didn't originally work with visual voicemail on previous firmware versions have been reported to be working on 2. Before 2. The only way to zoom into content e. Now just displays "New Text Message". 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. 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.

Sites such as Flickr are now able to show geotag and other information. Originally, you would have the option to turn it on when the notification appeared. Sounds can no longer be turned off en masse. All sounds must be turned off individually to mute sounds. New speaker sound when sending mail. Free update for iPod Touch owners that upgraded to iOS 2. Maps iPhone only Google Street View. Public transit and walking directions. Display address of dropped pins.

Share location via email. Cache of recent locations. Mail Resolve isolated issues with scheduled fetching of email. Improved formatting of wide HTML email.

App Store "Categories" section has been altered to display icons instead of a list. Option added to rate an application that is about to be deleted. Application icons display the install progress "in place" while updating, rather than on the last position of the page.

Podcasts now are being shown in catalogs. You can not delete audiobooks anymore through the device. Audiobooks without artwork, are now shown with a book icon and not with a note icon.

Contacts US phone numbers now display correctly e. Other Podcasts are now available for download or stream in the iTunes application over Wi-Fi and cellular networks. Decrease in call set-up failures and call drops. Improved sound quality of visual voicemail messages. Visual voicemail unavailability is shown in a screen instead of voicemail button not working.

Improved performance overall, especially noticeable in Notes and Camera applications. Emoji for SoftBank users in Japan. Pressing the Home button from any Home screen takes you to the first Home screen. New languages are supported. Security improvement. Better shift-key behavior. Automatic WebClip icon change.

Locked screen screenshots. Ability to record from devices connected through the dock port. Add the Remote button to control other devices e. Apple TV , etc. Improved general stability of Safari. Fixed issue where some images saved from Mail do not display correctly in the Camera Roll. Updates baseband. Uses a new baseband which patches the exploit previously used to unlock the iPhone 3G.

Two point draggable selection handles displayed to better make a selection. Undo by shaking. In Photos options menu select the copy button to select multiple photos to copy. Earth magnetic compass support. P3 Compass App. P3 Maps Features iPhone users got in 2. 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. Table of news stories from various internet sources related to the selected symbol. YouTube Can now log into account. Contacts are editable via Recent Calls. Camera and Photos Video recording in Camera app. P3 Videos can be trimmed directly from Camera app. Camera now has a thumbnail of the previous photo captured.

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. Photos options menu changed new UI , added copy button. Can now delete multiple photos. App Store Installs new apps from the second home page on.

You can still move the apps to the first home page manually. Screenshot browsing method has changed. Sending progress bar has been moved to the title bar and does not cover up the screen. Sending queue compose a new message s while sending others.

Select single or multiple messages to forward or delete. SMS entry text box have unlimited lines actually limited by the screen. MMS functionality including sending vCards, pictures, audio files, video depends on mobile network availability. P2 , P3 Optional Subject line in the Messages settings.

LDAP Contacts support. Mail several photos in the same message. Mail can now be composed in other apps without leaving the current app only if the developer allows this. Users can now view or create 'Invitees' on a Calendar event. Renders JavaScript from 3 to 16 times faster depending on circumstances.

Support for HTML5. New features in Settings such as AutoFill, and Anti phishing. View subscriptions. The last page is now closable, which will result in a new blank page opening won't save page info on exit, increases available memory. Bluetooth Bluetooth enabled for iPod Touch 2nd generation. 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. 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. Podcasts More details shown: time remaining, etc. Can be emailed. Improved language support. Foreign language keyboards extended to cover additional characters. Developers can now use CoreLocation to make Turn by Turn applications. Support for outbound audio and video streaming.

In-app additional payment API for paid applications free apps always remain free. Sign in with iTunes account. Buy service subscriptions or app add-ons. Spotlight Search Saves its last search results and offers options for excluding applications from searches.

Partial search for mail, iPod, contacts, events, notes, apps, and web clips. Can now read and write reviews for content on iTunes. 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. Full access to iPhone possible while tethered. In Windows iPhone shows up as a standard ethernet connection. 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. Starbucks, McDonalds. Locate Me for the iPod Touch accuracy improved. Now can store apps including native applications. Phone, iPod, Safari. P3 , T2 , T3 Stopwatch now shows both the total running time and the current lap time in the upper part of the clock app.

Right to left support. Numeric battery percentage view. P3 Holding the home button will no longer force quit an unresponsive application. To force quit an application in 3. 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.

Voice Memos New native app. Voice memos can be trimmed directly from app. Fixes SMS vulnerability [ 45 ] Bug fixes. Initial release on iPod Touch 3rd generation. Version 3. Free update for iPod Touch all models owners that upgraded to iOS 3.

Free update for all iPhone owners. Ask to Join Networks toggle is hidden unless Wi-Fi is on. Faster boot up time and various speed improvements. Trimming video clips on the iPhone 3GS now offers the ability to save the edited version as a copy rather than simply overwriting the original file.

Safari now has a toggle for "Fraud Protection" under its Settings pane. On iPod Touch 2nd generation the Voice Memos app now successfully records audio if you plug your microphone after you have started the application. 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.

Improves reception. Improved Exchange calendar syncing. Home screens can be customised on iTunes 9. Developer Extras. Improvements to OpenGL and Quartz. 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. 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. Anti-Phishing in Safari. Under usage tab in settings able to view data sent and received over tethering. Instruments over Wi-Fi. New enhancements to Core Audio in iPhone. Failover support for HTTP live streaming.

Voice control. Accessibility features can be toggled On or Off by triple-clicking the Home button. Option to practice VoiceOver gestures. Fixed an issue that caused app icons to display incorrectly. Genius Mixes. Genius Recommendations for Apps. Sync videos to albums. Redeem Gift Cards in App Store. Display available iTunes account credit. Enhanced iTunes support. Ability to copy and paste telephone numbers in dialer application. Sponsored links in Maps. Direct copy of contact info.

Security improvements. Adds separate usage metering for tethering data. Resolves intermittent issue that may interrupt cellular network services until restart. Fixes bug that could cause occasional crash during video streaming. Final release supported on first generation devices original iPhone and iPod Touch Improves accuracy of reported battery level on iPhone 3GS.

Resolves issue where third-party apps would not launch in some instances. Fixes bug that may cause an app to crash when using the Japanese Kana keyboard. Updates WebKit to Initial support for landscape home screens.

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. 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.

Places in the Photos app allows the user to view their photos by location needs iPhoto ' Share YouTube videos to Facebook. Bug fix in Mail so it does not crash any more when doing copy-and-paste from a one-page PDF document. Bug fix in Video playback so that videos no longer freeze in certain situations. Added Bing as a search engine in Safari. WebKit version Limited support on iPhone 3G and iPod Touch 2nd generation. P3 , P4 , T3 User interface for app switching by double clicking Home button.

Portrait orientation lock. P3 , P4 , T3 iPod control widget. Settings App-specific location settings. Cellular data toggle on-off. Simple Passcode Lock 4 digit number option.

New wallpapers. Wallpaper available for Home screen. P3 , P4 , T3 New wallpaper preview for Home screen and lock screen. Set up Internet tethering. Support multiple Exchange accounts.

Custom Dictionary. Airplane Mode for iPod Touch. Separated Sounds settings from General settings. Home screen Ability to categorise apps into folders with default folder naming based on category name in App Store. Up to 2, instead of visible apps 12 apps per folder. Folder name supports up to 13 characters. Custom Home screen wallpaper. Increased screen resolution. Dock redesigned to that of the iPad.

Rate on deleting app removed. Revised SpringBoard scrolling. Camera Up to 5x digital as opposed to optical zoom feature on the Camera app.

Select multiple photos for mass deletion. Support landscape mode. App Store Ability to gift apps. Maps Unified "locate me" icon. Background location icon shown on status bar. Nested playlists. Lyrics and Podcast info on Setting. Volume control with Bluetooth headsets. Album art displayed in Album view. Accounts management appears if syncing is enabled. Notes setting below Mail, Contacts, Calendars Settings if syncing is enabled.

Moved search box into title bar. Calendar Birthday calendar. CalDAV invitations. Ability to edit which calendar an event is located in after the initial saving. Ability to select any combination of calendar categories to view.

Contacts Unified info by linking contacts from different accounts. Streamlined "New Contact" screen. Spotlight Search with Web or Wikipedia. Search Messages. Safari Webkit version Recent searches below search field. Top hit in search. Ask Question. Asked 9 years, 5 months ago. Active 9 years, 5 months ago.

Viewed times. In viewDidLoad of my viewController I have the following code Add a comment. Active Oldest Votes. RachelD RachelD 3, 9 9 gold badges 39 39 silver badges 68 68 bronze badges. The inconsistency between the two OS versions disappears when I move the layout activity to viewWillAppear.

However, the numbers are off -- viewFrame shows as 0,0,, Adding a navBarHeight of 32 this adds to Where are the other 20 pts on the screen? So the test CALayer shows on the screen with about 10 pts between it and the nav bar more at the bottom. Sign up or log in Sign up using Google. Sign up using Facebook.