Replace the iPhone 7 Lithium-Ion Battery

Safety Precautions: Before starting, discharge the battery below 25% to minimize fire risk. Power off the device completely. Note that opening the iPhone 7 will compromise its water-resistant seal and may void your warranty.

1. Remove the two 3.4 mm Pentalobe screws located on the bottom edge of the device.
2. Apply gentle heat to the display perimeter to soften the adhesive, then use a suction cup and spudger to carefully open the display assembly.
3. Disconnect the internal cables securing the display and battery, and remove the protective brackets.
4. Carefully pull the adhesive strips holding the old battery in place; if they break, apply minimal, controlled heat to release the battery.
5. Install the new battery using fresh adhesive strips, reconnect all internal cables and brackets, and press the display assembly back into the housing.
6. Reinstall the two 3.4 mm Pentalobe screws at the bottom of the device.
7. Verification: Power on the device and navigate to Settings > Battery > Battery Health to confirm that the maximum capacity reading has reset or reflects the new battery's status.