Introduction
The ZTE Compel features a rechargeable lithium ion battery. You may need to replace the battery if it no longer holds a charge, if the battery is corroded, or if you are simply force restarting your phone. Please take all necessary precautions, such as protective gloves and eyewear if dealing with battery corrosion.
Tools
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Place the phone on a flat surface with the screen facing down. This will allow easy access to the removable black plastic cover on the back of the phone.
 
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In the bottom right corner of the device, use your fingernail to remove the back cover of the phone by lifting up and holding the device with your other hand.
 
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In the top-right area of the battery, use your fingernail to lift the battery out of the phone.
 
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To reassemble your device, follow these instructions in reverse order.