iOS 14 is available today - Apple
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Download iOS 4.0 for iPhone 4, 3GS, 3G and iPod touch [Final Version] | Redmond Pie
Apple iPhone 4 - Full phone specifications
Update software - Apple iPhone 4 - iOS 7 - Device Guides
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Fluff] My gold iPhone 4 geekgraded to iOS 6.0.1 with loads of games and apps : r/LegacyJailbreak
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iOS 8 For iPhone 4 Compatibility, And Other Devices [Chart] | Redmond Pie
Can You Still Use An iPhone 4? No, Not Really (Here's Why…)
iOS 4 - Wikipedia
Update iPhone 4 to iOS 8 or 9 - Is this Possible?
Ask the Readers: Will You Upgrade to iOS 7?
Update iPhone 4 to iOS 8 or 9 - Is this Possible?
iPhone 4 iOS 7.1.2 - Review (4K) - YouTube
Download iOS 5 GM For iPhone 4, 3GS, iPad 2, iPad 1 And iPod touch | Redmond Pie
iPhone 4 through the ages: From 'antennagate' to iOS 7 (pictures) - CNET
iOS 10 device compatibility list
iOS 8 on the iPhone 4S: Performance isn't the (only) problem | Ars Technica
:max_bytes(150000):strip_icc()/IPHONE4-5c3d1a0d46e0fb0001072e81.jpg "Should You Upgrade Your iPhone 4 to iOS 7?")
Should You Upgrade Your iPhone 4 to iOS 7?
iOS 4 Features: MultiTasking, Folders, and Much More - MacRumors
iOS 4 device compatibility - can your iPhone and iPod touch be upgraded? | iMore
iOS 11 will render older iPhones, iPads and apps obsolete | iOS | The Guardian
Flashback: iOS 4 adds multitasking, FaceTime and other important features - GSMArena.com news
iOS 12 Compatible Devices List of iPhone, iPad, iPod Touch
Farewell iPhone 4: No iOS 8 upgrade for you | ZDNET
Will iOS 9 slow down my iPhone 4s or iPhone 5/5s? Perhaps a little (Video) - 9to5Mac
iPhone 4 - Wikipedia
iOS 6 Compatibility & Supported Devices | OSXDaily
iOS 7.1 on the iPhone 4: As good as it's going to get | Ars Technica
