Apple releases iOS 7 for iPhone, iPad and iPod Touch
iPhone 4S - iOS 7 Review - YouTube
Ask the Readers: Will You Upgrade to iOS 7?
Here's how iOS 8.0.2 compares to iOS 7 on an iPhone 4s | Cult of Mac
question] Recently got my hands on an iPhone 4 running iOS 7.1.2. Should I jailbreak it? Btw it's a 32gb white, I also need to replace the battery. : r/LegacyJailbreak
iOS 7 on iPhone 4s: Final Impressions and Performance
iPhone 4S iOS 7 vs iOS 8 (Video)
New lease on life or death sentence? iOS 7 on the iPhone 4 | Ars Technica