Lift the midframe from the top corners and remove it from the phone.

The top midframe may stick to the lower midframe at its bottom right corner. If that happens, slowly peel it off.

To reinstall the top midframe:

Align the midframe's top edge to the phone and lay the frame down on the phone.

Use fingers to apply pressure along the midframe perimeter to snap the midframe clips back into place. The edges should sit flush against the phone edge.