Replace iPhone 4 Battery
Overview
The iPhone 4 battery will continue to hold less charge over time until you need to replace it. You can easily hire a company to replace it or you can do it yourself. Here we explain how to do it yourself.
Step 1 - Buy Replacement Battery
Buy a replacement battery from an online store such as eBay. Be sure to get the model that matches your phone.
Image courtesy of: eBay.com
Step 2 - Unscrew Screws
Unscrew the two screws on the bottom of the iPhone. Make sure your iPhone is turned off.
Image courtesy of: ifixit.com
Step 3 - Slide Back Cover Off
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Image courtesy of: ifixit.com
Step 4 - Unscrew Screws
Unscrew the screws connecting the battery to the iPhone.
Image courtesy of: macworld.com
Step 5 - Remove Old Battery
Remove the old battery by pulling on the plastic tab. Replace it with the new battery.
Image courtesy of: macworld.com
Step 6 - Carefully Reassemble iPhone
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Image courtesy of: ifixit.com
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Replace the iPhone 4 Battery.pdf