3GS battery replaced, but now wi-fi, gsm, BT, speaker don't work
I followed all the steps in the ifixit manual for replacing the battery on my 3GS which was working perfectly well except for the poor battery life.
After powering it on I found out that the speaker stopped working, along with the GSM reception, wi-fi, and probably bluetooth too.
All cable connections look and feel connected. Now what? Trash?