Before starting, it is necessary to discharge the iPhone below 25% because a charged Li-ion battery can ignite or explode if accidentally cut.
- Turn off iPhone
- Unscrew the two 6.75mm long pentalob screws on the bottom edge of the iPhone using a Pentalobe screwdriver (Ph0001.2)
Opening iPhone will break its waterproof seal, so have a replacement seal ready before beginning this step. Without a new seal, your iPhone will not be waterproof.