5 - 30 minutos
I previously dropped my phone in a puddle of water and took it apart to dry it out. After drying it out I couldn't get out the rice and used a knife to try and get the rice out and accidentally punctured the Battery. After a few days it worked and saw no problems til about month later when the battery didn't hold a charge and so i ordered a new battery
Easiest repair I've ever done and I've done some pretty serious stuff.
Do not use any sharpe objects with any repairs :).