1, open the back cover: before dismantling the machine, be sure to turn off the phone first to avoid accidents. Should first take out the mobile phone card slot inside the mobile phone, and then use the suction cup, suck the upper part of the mobile phone, slowly pull away, inside is the buckle design, one time too much force may break the buckle.
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2. Remove the mobile phone board card that affects the replacement of the battery: after the back shell of the mobile phone is removed, remove some of the boards that affect the replacement of the mobile phone battery on the mobile phone motherboard, such as the motherboard and camera, pay attention to the removal of these parts, first disconnect the mobile phone power supply.
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3, take off the old battery: there are generally two white easy to pull glue under the battery, you can take off the battery after pulling it open, if you still can't take it down, find a card, insert it into the mobile phone battery, and pull the mobile phone battery bit by bit from one side.
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4, replace the new battery: install the newly bought battery, and then install the parts in accordance with the order, when the battery can be replaced, the replacement can be started to test to see whether the battery is installed and whether it can be charged.
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5. Install the back cover: Tear the waterproof adhesive protection on the back cover of the phone, align the front half with the fuselage first, and then slowly glue the back cover on the fuselage and press it flat, and then heat it with a hair dryer to ensure better bonding effect. If you only replace the battery, some sealing tape will lose adhesion or damage during the disassembly process, in order to ensure the three-proof performance after assembly, it is best to buy and re-seal a new circle of sealing tape in advance.