Make sure the battery is disconnected before you disconnect or reconnect the cables in this step.

Use a spudger or a fingernail to disconnect the two lower display connectors by prying them straight up from their sockets on the logic board.

To reconnect these cables, press down on one end until it clicks into place, then repeat on the opposite end. Do not press down on the middle. If the connector is even slightly misaligned, the connector can bend, causing permanent damage.

If you have a blank screen, white lines on the display, or partial or complete lack of touch response after reassembling your phone, try disconnecting and carefully reconnecting both of these cables and make sure they are fully seated.