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IOS 1 "The iPhone was born
iPhone OS 1 is the first major release of iOS.OS. This version of iOS was the first repetition of Apple's touch-centric mobile operating system. No official name given on its initial release. -
iPhone 1
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IOS 1.1
It allowed users to purchase music directly on their phones, As the name implies, the store only worked over Wi-Fi.
Features
iTunes Wi-Fi Music Store, iPod Touch compatiblity -
IOS 2.2
Features
Google street view, Podcast downloads -
IOS 1.1.3
Features
Better location, Web clips on home screen, Re-arrange icons, Multi touch keyboard -
IOS 2
iPhone OS 2 is the second major release of iOS. It was the first release of iOS to support third-party applications via the App Store. iPhone OS 2.2.1 was the final version of iPhone OS 2. The most noticed feature of iPhone OS 2 was the App Store. Before this feature was introduced, the only way to install custom applications on the device was via jailbreaking. -
3G
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IOS 2.1
Features
Battery life and speed fixes, iTunes Genius playlist, Dropped calls fixed. -
3GS
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IOS 3
Cut, copy and paste, Spotlight search, Push notifications for 3rd party apps, Voice control, MMS, USB and Bluetooth tethering, landscape keyboard and Find my phone -
IOS 3.1
Genius features, Ringtone downloads, remote lock, voice control over Bluetooth -
IOS 3.2 " iPad arrives"
New UI paradigms for a larger screen, New app designs, The note book (The Notepad app received a border of stitched leather to make it look like a real notebook, the Calendar and Contacts apps were both made to look like small books, complete with pages.), iBooks -
IOS 4
Multitasking, Home screen folders, FaceTime video chat, Unified email inbox, Threaded email messages, Retina display support, iAd support -
iPhone 4
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IOS 4.1
Game Center, TV rentals, iTunes ping, HDR photos -
IOS 4.2.1.
iPad multitasking,, iPad folders, Airplay, Airprint -
IOS 4.2.5
Verizon support, Personal hotspot (CDMA only) -
IOS 4.3
Personal hotspot (GSM), Airplay for 3rd-party apps, iTunes home sharing -
iPhone 4S
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IOS 5
Siri, Notification center, PC-free, iTunes Wi-Fi sync, iMessage, iCould -
IOS 6
Homegrown Maps and turn-by-turn navigation, Siri enhancements, facebook integration, passbook, iCould tabs, Mail enhancements, facetime over cellular -
iPhone 5
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IOS 7.0
Visual overhaul, control center, Airdrop, Refreshed core apps, iTunes radios, Facetimme audio, Touch ID -
iPhone 5C and 5S
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IOS 8
Continuity, Widgets, Extensibility, QuickType, iCould drive, Healthkit, Homekit, Family sharing -
iPhone 6 / 6Plus
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iPhone 7 and 7 plus
