My iphone 3gs had around 95% battery and it just shut down while I was using it. My power button broke a few months ago which wasn't that big a deal because I could just turn the phone on by charging it.
However, now it shut down and when I plug it in it only shows the apple logo then shuts down again.
I don't think the problem is the cable cause I've tried three different cables of my own and one that belongs to my friend and they all had the same end result.
What could be the problem here and how can I fix it?
I live in Brazil and here it's pretty expensive to take to an apple store or something. I don't have the money for that, so if there's something I could do myself then please enlighten me.