Follow each step carefully.
Press and hold the power button until the power off slider appears, then slide to power off.
Use a plastic opening tool to gently pry open the back cover from the device.
Unscrew the battery connector and gently lift it away from the motherboard.
Identify the Taptic engine located at the bottom of the device.
Use a small screwdriver to remove the screws securing the Taptic engine.
Gently lift the Taptic engine from its socket on the motherboard.
Align the new Taptic engine with the socket and press it firmly into place.
Use the small screwdriver to secure the Taptic engine with the screws.
Align the battery connector with the motherboard and press it down until it clicks.
Align the back cover with the device and press down until it clicks into place.
Press and hold the power button until the device vibrates and the screen lights up.