How to Tell an iPhone 4 from a 4s: 8 Steps (with Pictures)
iPhone 4S Battery Life (Real-World Tests): EveryiPhone.com
Apple Confirms Battery Life Problems Are iOS 5 Related | WIRED
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iPhone 4S Review
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PhoneSuit Elite Battery Case (for iPhone 4 and 4S) Review | PCMag
Comparing the iPhone 4S vs iPhone 4 vs iPhone 3Gs vs Galaxy S II | OSXDaily
Battery Life of iPhone 4S Draining Too Fast? Try Calibrating the Battery | OSXDaily
Battery Life - Apple iPhone 4S: Thoroughly Reviewed
Complete Replacement Battery Kit for iPhone 4S + Extra Accessories – Cell Phone DIY
New lease on life or death sentence? iOS 7 on the iPhone 4 | Ars Technica
The iPhone 4S Battery Life Is Underwhelming Vs. iPhone 4
In depth review: Apple's iPhone 4S running iOS 5 | AppleInsider
iPhone 4S Battery Replacement - iFixit Repair Guide
Retro review: I bought an iPhone 4s and spent a day with it | Technology News,The Indian Express
Tips to Keep iPhone 4S Battery from Draining Fast
Looking inside an iPhone 4/4S battery | Rip It Apart - Jason's electronics blog-thingy
![Thanks To Siri, The iPhone 4S Is A Serious Upgrade [CultofMac's Big Fat Mega Review] - Page 3 of 3 | Cult of Mac](https://cdn.cultofmac.com/wp-content/uploads/2011/10/iphone4s_v_iphone4.jpg "Thanks To Siri, The iPhone 4S Is A Serious Upgrade [CultofMac's Big Fat Mega Review] - Page 3 of 3 | Cult of Mac")
Thanks To Siri, The iPhone 4S Is A Serious Upgrade [CultofMac's Big Fat Mega Review] - Page 3 of 3 | Cult of Mac
iPhone 4S: why has standby time dropped? | Technology | theguardian.com
/cdn.vox-cdn.com/assets/771970/iPhone_4S_battery_life.png "iPhone 4 and 4S users reporting dramatically decreased battery life - The Verge")
iPhone 4 and 4S users reporting dramatically decreased battery life - The Verge
![Apple iPhone 4S battery test is complete, here go the results [TEST]](http://cdn.gsmarena.com/pics/11/11/iphone-4s-battery-life/gsmarena_002.jpg "Apple iPhone 4S battery test is complete, here go the results [TEST]")
Apple iPhone 4S battery test is complete, here go the results [TEST]
How to save battery on iPhone 4 | POPSUGAR Tech
iOS 7: How to improve your iPhone 4S and iPhone 5 battery life, and reduce lag - ExtremeTech
