iPhone 4S: why has standby time dropped? | Technology | theguardian.com
iPhone 4 and 4S users reporting dramatically decreased battery life - The Verge
Battery Life - Apple iPhone 4S: Thoroughly Reviewed
iPhone 4 Battery Life (Real-World Tests): EveryiPhone.com
Looking inside an iPhone 4/4S battery | Rip It Apart - Jason's electronics blog-thingy
The difference between iphone 4 and 4s
How to replace the iPhone 4S battery | iMore
PhoneSuit Elite Battery Case (for iPhone 4 and 4S) Review | PCMag
Amazon.com: Replacement Battery for iPhone 4S - Compatible with A1387 CDMA & GSM Models : Cell Phones & Accessories
Comparing the iPhone 4S vs iPhone 4 vs iPhone 3Gs vs Galaxy S II | OSXDaily
iOS 7: How to improve your iPhone 4S and iPhone 5 battery life, and reduce lag - ExtremeTech
iPhone 4S Battery Life
Thanks To Siri, The iPhone 4S Is A Serious Upgrade [CultofMac's Big Fat Mega Review] - Page 3 of 3 | Cult of Mac
Maxboost iPhone 4S Battery Case/iPhone 4 Battery Case (1900mAH Fits All Versions of Apple iPhone 4 & 4S) - Detachable Battery Charger Case External Rechargeable Battery Pack Charging Power Case | Walmart Canada
iPhone 4 vs. iPhone 4S Specs Showdown - Fight! [Comparison Chart] | Cult of Mac
Retro review: I bought an iPhone 4s and spent a day with it | Technology News,The Indian Express
Apple Confirms Battery Life Problems Are iOS 5 Related | WIRED
The iPhone 4S Battery Life Is Underwhelming Vs. iPhone 4
The iPhone 4S and the iPhone 4 compared - The Washington Post
iPhone 4S Battery Life Problems Befuddle Apple Engineers, Owners | HuffPost Impact
Battery Life of iPhone 4S Draining Too Fast? Try Calibrating the Battery | OSXDaily