If your phone battery is dying frequently and at times when it shouldn't. Losing its charge quicker than usual or slowly charging. Then you should probably consider changing its battery. While changing a battery in repair shops can be very expensive you can change it yourself following this guide and save a few hard earned pennies!
Change the battery on your iPhone 7 by yourself, all you need is an iPhone 7 DIY Battery Replacement Kit, and some time. Follow the instructions step by step, and you will soon be able to enjoy a well-working battery again.
1) Switch off your device
To get started turn off your iPhone 7 completely to avoid damaging it during the repair. Press the Sleep/Wake button for about three seconds until the slider labeled "power off" appears. Swipe it from left to right and it's turned off.
2) Remove enclosure screws
You will need a PL1 screwdriver to open iPhone 7. Remove the two pentalobe screws at the bottom of the enclosure. They are located on the left/right side of the lightning connector.
3) Lift the display
To lift the panel you will need a suction cup, a hard plastic pick, and a heat gun (a hairdryer will also work), which you get in the kit except for the heat gun. The screen is glued to the frame, use a heat gun to heat the outer edges of the display to about 60°C (140°F).
Place the suction cup over the Home button or next to it. While lifting the screen with it, insert hard plastic pick between the aluminum frame and the display. Press down the aluminum frame and slide the pick all around the iPhone between the aluminum frame and the display frame. Try not to stick the pick in too far because that could damage the flexible flat display cables.
Use the pick to push the display so the tabs come out of the aluminum frame. Fold the display over to the side, and be careful not to stretch the flexible flat cables too much.
4) Remove battery connector cover
Remove 4 Y000 screws that are securing the lower connector bracket and then remove the bracket itself. While doing this repair, keep track of each screw and make sure it goes back exactly where it came from to avoid damaging your iPhone.
5) Disconnect battery
Use a nylon spatula to disconnect the battery connector from the motherboard. Bend the connector cable up slightly to prevent it from making contact with the socket and providing power to the phone.
6) Disconnect display connectors
Keep the nylon spatula in your hand and disconnect the two lower display connectors by prying them straight up from their sockets on the logic board.
7) Remove front panel sensors bracket
Use Philips screwdriver to remove two 1.3 mm Philips screws that are securing the bracket over the front panel sensor assembly connector. Remove the bracket.
8) Disconnect the front panel sensor assembly
Use nylon spatula in order to disconnect the front panel sensor assembly connector from its socket on the logic board. Finally, remove the whole display assembly.
9) Remove barometric vent
Remove the two 1.9 mm Philips screws that are securing the barometric vent to the rear case and then remove the vent.
10) Disconnect Taptic Engine
Use nylon spatula to disconnect the Taptic Engine connector from its socket on the motherboard.
11) Remove Taptic Engine
Remove the three 1.6 mm Philips screws securing the Taptic Engine to the rear case and then remove it.
12) Peel adhesive strips
Use a pair of tweezers to peel back two of adhesive strips on the lower edge of the battery.
13) Remove adhesive strips
Slowly pull the battery adhesive tap away from the battery toward the bottom of the phone. Pull steadily, maintaining constant tension on the strip until it slips out from between the battery and the rear case. Do this process for the both of adhesive strips.
14) Remove the battery
Remove the battery from the rear case. If any of the adhesive strips broke off and the battery remains stuck to the rear case use a hairdryer to heat the rear case directly behind the battery.
15) Reassemble with the new battery
Your iPhone 7 is completely disassembled. Now take your new battery and reassemble your iPhone 7 by following this guide in reverse order and then test everything up to make sure you did everything properly.
Congratulations, you changed your iPhone 7 screen. Now just test a few things to make sure everything is working properly:
-Test the brightness of the display.
-Test the touchscreen, select an app, and drag it all around the display. If its following your finger everything is fine.
-Charge your phone in order to test battery capacity and its health.