Remove the following four press-fit connectors with the flat edge of a plastic spudger or opening tool:
Front-facing camera connector.
Rear-facing camera connector.
Digitizer connector.
The rear-facing camera may be held down to the frame with two sided tape. Try to move the camera with the spudger prior to lifting the motherboard If it does not budge, use the same tool to pry it from the frame to avoid damaging the connector cable in the next step.
You may also need to remove the vibration motor (the small circular component with two gold contacts), ear-speaker, and two rubber covers on either side of the ear-speaker to transfer these over to the new display assembly.
Use a spudger to carefully remove these components and then place them in the new display assembly..