Have you tried to bend the small contact connectors on the battery? I had an issue where a battery was causing the phone to shut off and this was the problem. You'll need a fairly small watch type size screw driver for most control, but anything that has the strength and size should be fine. Just be sure not to short the battery by touch 2 connectors at the same time, which is hard to do since they are recessed. And of course you are reponsable for breaking your battery, phone, or shocking /fire. have fun & good luck x