Use one hand to hold the front camera out of the way.

With your free hand, insert the tip of a spudger in one of the 5G mmWave antenna bracket's screw holes.

Pry up with the spudger to dislodge the bracket.

Remove the bracket.

During reassembly, insert the bracket at a downward angle so the spring contacts and foam pads press up against the 5G mmWave antenna. Press the bracket down to secure it.