The black Coaxial connector should be disconnected first as it is the ground cable.

Peal the tape up in the upper right corner of the phone to reveal the black coaxial cable.

To disconnect the black coaxial cable, slide a thin, ESD-safe pry tool or angled tweezers under the metal neck of the connector (as close to the head as possible) and lift straight up from the board.

When working with these connectors, it's key to always lift the head straight up. If pried on at an odd angle, you risk breaking the socket off of the board underneath.

Reconnecting these can be tricky. Use tweezers to hold the connector in place over its socket and gently press down with your finger or a spudger—the connector should "snap" into place. If you're having trouble, reposition the head and try again.

Don't try to force the connector into place or you may permanently damage it.