iPhone 3GS Battery doesn't take charge
Hi everybody !
One of my friends has given his 3GS to me so I can try & repair it. His symptoms are quite simple : when he pluggs the iPhone either on a wall or a USB plug, the battery appears (like when you're plugging in an iPhone that ran out of battery) but it remains red (it doesn't charge) and the iPhone doesn't start.
I'm planning to replace the battery and I'd like to be sure that this doesn't come from another problem.
Any answer would be welcome !
Thanks in advance