Chosen Solution

Hello there, I have replaced the battery of my iphone 4s, following your guide, but when I tried to turn it on, it showed me the apple logo, and then showed that I have to connect it to iTunes, I connected it but every time I do the restore, it stops in the first quarter and give me an error message! what shall I do in this case? is my logic board damaged? how do I know what is the problem? is there any possible way to solve it? Thanks a lot for you,

when yo take the battery out there is a small gold contact. make sure its still there. try another battery? maybe the new one is faulty. try a hard reset . put it in dfu mode and hit restore hope this helps good luck

What error does it say? Error 21? 29? If so it’s a new battery you need