The display and digitizer cables run on top of each other. To avoid cable damage always start by disconnecting the upper cable first and never try to disconnect both at the same time.

Use the pointed end of a spudger to disconnect the bottom two display cables by prying the connectors straight up from their sockets.

To re-attach press connectors like this, 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 even slightly misaligned, the connector can bend, causing permanent damage.