iPhone 3GS shuts off randomly... bad battery or logic board?

[betito477]

My old 3GS that I bought on release date shuts off randomly when using it even though there's still anywhere from 20-80 percent battery left.

It will only turn on if I connect it to a charger through wall or USB.

I want to sell my phone but I can't sell it like this. Is this a bad battery issue that can be replaced? Or is it the logic board failing?

 

[miles01110]

There's really no way to tell without buying a new battery or a new logic board to see if either one of them solves the problem. It's probably not cost effective at this point to do so.

 

[paul117]

My old 3GS that I bought on release date shuts off randomly when using it even though there's still anywhere from 20-80 percent battery left.

It will only turn on if I connect it to a charger through wall or USB.

I want to sell my phone but I can't sell it like this. Is this a bad battery issue that can be replaced? Or is it the logic board failing?

start of last year my old iphone 3gs did the same thing.... when i attempted to turn it on it would say it was flat... i plug it in to a charger then it turns on right away and works fine again.... in my case it was the logic board. it was still under warrenty at the time and was replaced by apple on the spot.

 

[entractiv]

My 4S does the same thing. Worked fine for a few months and then started shutting down even though the battery said it still had a charge. To fix it, they have sent out 4 replacement phones so far -- each one has the same issue. Have tried using a different charger, restoring the phone, resetting the phone, using a different Apple ID and nothing works. It can't be the phones since everyone of them have had the same problem. If anyone has any answers I would be most greatful...