Introduction
Removing the Samsung Galaxy J3 Mission battery is crucial before diving into other repairs or replacements. Failure to remove the battery can result in serious injury and/or damage to the device.
Tools
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            Insert your fingernail into the back cover removal slot and gently pull back until the cover pops off. 
 
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            Insert your fingernail into the battery removal slot and pull back until the battery pops out. 
 
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                            Conclusion
                          
                          To reassemble your device, follow these instructions in reverse order.