New iPhone is my battery faulty?

I've had this restored iPhone 4S for 2 days now, it shuts itself off with a screen asking to be charged even when there's like 40 percent battery left, then today I had 100 percent battery and it's gone down 27 percent in 20 minutes of using it, is something wrong with this pone and should I return it or are all iPhones battery's like this?

I would first suggest getting to the bottom of the issue. Are you running any apps int he background. (double tap your home button and delete any running apps), double check location services and see what apps you have on. Another thing would be to do a factory reset to clear any settings that might have been accidentally moved out of place before factory reset make sure you back up your phone on iTunes. If this does not work then it might be your internal battery in which you can get a warranty replacement or a 14 day exchange straight from your carrier or the apple store.

If it was heavily used, the battery might be worn out, or if it was allowed to discharge too far (leaving it unused for long periods with zero charge available), it could have damaged the battery. The battery can easily be replaced by Apple for a fee.

  • Will Apple replace my iPhone 4S - faulty battery? Haven't had my iPhone for a year yet and the battery drains so quickly it's impractical to use. Will Apple replace it, seeing as its still under warrenty and it isn't because I've damaged anything?
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