Retro review: I bought an iPhone 4s and spent a day with it | Technology News,The Indian Express
Is the iPhone's battery life actually better after five years? | Computerworld
Battery Life - Apple iPhone 4S: Thoroughly Reviewed
The iPhone 4S and the iPhone 4 compared - The Washington Post
How to replace the iPhone 4S battery | iMore
Apple Confirms Battery Life Problems Are iOS 5 Related | WIRED
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Thanks To Siri, The iPhone 4S Is A Serious Upgrade [CultofMac's Big Fat Mega Review] - Page 3 of 3 | Cult of Mac
Tips to Keep iPhone 4S Battery from Draining Fast
iPhone 4S Battery Life Problems Befuddle Apple Engineers, Owners | HuffPost Impact
iPhone 4 Battery Life (Real-World Tests): EveryiPhone.com
In depth review: Apple's iPhone 4S running iOS 5 | AppleInsider
iPhone 6 Plus vs. 6 vs. 5s vs. 5 vs. 4S: Battery life compared
10 Common iPhone 4s Problems & How to Fix Them
PhoneSuit Elite Battery Case (for iPhone 4 and 4S) Review | PCMag
iPhone 4S Battery Life (Real-World Tests): EveryiPhone.com
The difference between iphone 4 and 4s
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iPhone 4 vs. iPhone 4S Specs Showdown - Fight! [Comparison Chart] | Cult of Mac
iPhone 4S: why has standby time dropped? | Technology | theguardian.com
iPhone 4S Battery Replacement - iFixit Repair Guide
Apple iPhone 4S specifications - Tech Info & Solutions
