The 5G mmWave antenna is lightly adhered to the frame.

Insert the point of a spudger between the frame and the right edge of the 5G mmWave antenna.

Pry up to separate the adhesive.

During reassembly, if your adhesive is still intact and sticky, you can reuse it. Otherwise, follow this guide to replace the adhesive.

If you don't have custom cut adhesive strips, use double-sided tape, like Tesa Tape, to secure the antenna to the frame.