recentally my iphone hasnt been holding its charge lasted about 3 hours on standby so i decided to change it took it all apart and poped the new one in it booted up fine however after 5 or so min of usage it freezes to the apple logo screen and if you leave it for a while and press the home & lock button it gose back to the spring board and then freezes again. so i took the phone apart again and found there is a small bend in the main board could this be the problem or could it be the battery giving iregular voltage?