Use a spudger to pry the battery and OLED panel cable connectors up from their sockets on the logic board.

Try not to damage the black silicone seal surrounding this and other board connections. These seals provide extra protection against water and dust intrusion.

Bend the connector slightly away from the logic board to prevent it from accidentally making contact with the socket and providing power to the phone during your repair.

To re-attach press connectors like this one, carefully align and press down on one side until it clicks into place, then repeat on the other side. Do not press down on the middle. If the connector is misaligned, the pins can bend, causing permanent damage.