10 - 30 minuten
My iPhone just wasn't holding a charge long even without using it 3-4 hours and have to charge it. So I googled how to replace phone battery and came across the fix it YouTube video on how to replace a iPhone 4S battery and thought I could do that.. So I went to the web site and ordered the battery and the quick fix pack that comes with replacement screws and two screw drivers one Phillips and one iPhone special screw driver I also ordered the plastic prey tools.
I got my order in about 8 days and started changing out the battery. Just as the video showed I removed two screws on the bottom and used the push tool that I ordered to carefully help push the back of the phone up in a sliding motion it only has to move about a 1/4 inch then it just lefts up off the phone. After I removed the back I found the two Phillips head screws that hold the battery and a small brass piece that you have to be very careful not to lose it in the phone or lose the it and the two screws are very small it's easy to lose them if you drop them. The thing that saved me is the end of the screw driver is magnetic so the screws will stick to it but not the brass part. Next I tried to removed the battery but it wouldn't move. I new they said in the video that it had a glue holding it in place so I used the pry tool to get a end started up then used a little too much force and the tool broke but I did manage to get the battery out but it was badly damaged doing so. After having removed the battery I put in the new one and with careful steady hands lined the metal plate up with the screw hole and using the magnetic screw driver got the screw started then came the brass thing that to this day I'm not sure if I put it back on right but did get the last screw on with the small wire in place. This is hard to do so take your time. After getting all the insides back in I closed the phone and put the two screws back in the bottom end. I held my breath as I powered up the phone but it came on and after a good charge it is working nice. I would give this a 4 out 5 in difficulty because of the small screws, the brass part getting it back in and removing the old battery is hard. All in all I did the switch in less then 30 minutes
My advice is to take your time and go slow. You don't want to drop a screw because you might not ever find it. Also use something other then the plastic tools to pry out the battery because if its stuck good its going take a lot of force to get it started lose and being careful not to hurt the phone while doing so..