iPhone 3GS turns off by itself.

[EarthNeutron]

Hello guys, I have a problem with my iPhone 3GS. I purchased my iPhone in June 2010. Since then, I noticed that after talking for more than 15-20min on the phone, the iPhone restarts itself. It happened to me just twice. I don't know if this is a problem or not, but it's annoying.
Have you noticed something similar with your iPhones?
I haven't had this problem with my old 3G.

 

[Irish Rose]

Wirelessly posted (Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_0_1 like Mac OS X; en-us) AppleWebKit/532.9 (KHTML, like Gecko) Version/4.0.5 Mobile/8A306 Safari/6531.22.7)

Try doing a reset, if that doesn't help, take it into an Apple store and get someone to look at it for you. My old 3GS never did that.

 

[bunnicula]

I just returned an iPhone 4 that was doing this same thing... though not as frequently as your 3GS seems to be.


Return it.