IPhone 4 sometimes randomly dies?

It doesn't do this often (thankfully), but sometimes my iPhone randomly dies or loses a lot of battery for no reason. It will go from 70% to 40%, or sometimes 30% to 0%, when I'm not doing anything on it. I always turn off my apps after I use them, so nothing's on, and I rarely use Wi-Fi. Should I get my phone checked out?

Hi

I had the same issue with my iPhone 4. I sent it off to iPhoneFixed.co.uk which are based in Cardiff. They replaced the battery and checked to see if the iPhone was effected by water. The chap I emailed at iPhoneFixed said that a battery on the iPhone usually lasts just over a year and at best 2 years. I think it cost me around £30 and they use original Apple batteries. A year on ad my iPhone is still going strong. I know they sell the parts for the iPhone 4 also, so you can fit it yourself, its cheaper. Take a look at http://www.iphonefixed.co.uk/uk/en/iphone-4-original-apple-battery-bat4s01.html

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