20 - 30 minuten
My iPhone 3G S has been one of the greatest phones I've ever owned. Each of my family members have one. Two of them recently started shutting off with no warning due to aging batteries. Take more than a couple of pictures? It dies. Facebook app for more than a minute? It dies. Battery percent below 75? It dies. TIME FOR A NEW BATTERY.
Frankly, I was afraid to do the repair because I couldn't do without my iPhone for more than a few hours. If I screw up, I have to buy a new phone. Fortunately, my iPhone wasn't under warranty and my contract expired long ago (paying month to month is just as good.) When I finally couldn't stand it any longer, I attempted the repair. It was nerve racking the first time, but I was successful. I had to do it a few more times for other family members, and those went a LOT easier since I knew what to expect. I can now swap a battery in the 3G S in under 30 minutes. All, thanks to iFixIt's guide. So, a $20 battery or a $400 new iPhone 5? Hmm.... a no brainer.
If you elect to swap the battery yourself, be sure to have a noise free, well lit and clean environment. Also, get the long black spudger from iFixIt. The short green one is not very useful for the battery swap. You need to see very well to do this. I required a pair of reading glasses as well just to make sure I could see it all (phone screws are small.) If you don't have a magnetic mat for screws, use a strip of scotch tape looped on itself with sticky side out and stick on a box top or piece of paper. Stick the screws in order on the tape and make sure no kids or pets are around to knock them around. I also found a hair dryer to be required on one of my phones since the battery was super stuck. The heat loosens the adhesive, but even then it requires firm, steady, slow pressure with the black spudger to pry it up. Be careful, and be patient. Removal of the old battery was by far the most time consuming aspect. At least 10 minutes to work it loose while not bending the case or damaging something delicate. Final thoughts - try your very best to not bend or damage the old battery upon removal. If your new battery is bad from the factory (sometimes it happens) you'll need to swap your old battery back while a replacement is sent. This happened to one of my phones. Boy was I GLAD I didn't damage the old one!