If your iPhone battery is dead or dying, you might think you're only option is to buy a
new phone.
Well I'm happy to tell you that you can save a lot of money by replacing the battery yourself,
and it'll only take about 15 minutes.
I'm going to quickly go through the process of replacing the battery on the iPhone 3G
or 3GS.
Now this video is just an overview of the repair.
For detailed instructions, check out the repair guide on ifixit.com.
Before I get started, It's important that you know which kind of iPhone you've got,
so take a second to check out the model number on the back.
Plug that number into our website to see whether it's a 3G or 3GS.
I've got a 3GS.
This repair only requires a phillips 00 screwdriver, a spudger, a suction cup and a paper clip.
Let's get started by removing the SIM card and these two screws down by the dock connector.
Then I'm going to use my suction cup to lift the display assembly.
Don't yank it all the way off, because it's still attached to the logic board with 3 cables.
I'll gently detach the cables, and now I can put the display assembly aside.
The battery is underneath the logic board, but that doesn't mean it's difficult to get
to.
There are just a few more screws and cables standing in the way between me and my dead
battery.
So I'm going to go ahead and remove those now.
All these cables can be easily disconnected with a spudger.
Now I'm going to use my spudger to gently lift the camera out of it's housing.
It won't come all the way out though because it's still connected to the logic board.
Starting near the dock connector, I'm going to gently pry up the end of the logic board,
and once it's free, I can slide it out of the phone.
Instead of using the plastic pull tab to remove the battery, I'm going to go around the sides
of it with my spudger, that way the battery won't bend.
Once the old battery is removed, it's super easy to pop the new one in.
To reassemble your phone, follow the steps from the repair guide in reverse.
At iFixit.com you'll find the parts and tools you'll need for this and many other repairs.
If you run into problems during any of your repairs, you can search the answers section
of our site.