Quoted from TechRadar, Sunday (29/10/2011), most users reported that iPhone 4S battery life drop 10% every hour even if the phone is in standby. Though Apple claims a standby time can be up to 200 hours.
"I've turned off all new features including Siri and location services feature, but the durability of the battery is still very bad. I also tried removing all apps but the result is the same. I contacted Apple's senior engineers and he admits this is a problem," the confession of a user who cited the Guardian media.
Some suspect that bad performance of battery associated with Sirii. Siri is the voice command feature at iPhone 4S. Other opinion said there assess the corrupted file. Apple reportedly is investigating a major cause of battery life problem..
