Only the Bullseye system supports double-tap on the screen. Bookworm does not support double-tap, and there is currently no way to enable it. The double-tap feature is supported only on the Bullseye system. Unfortunately, Bookworm does not support double-tap, and there is currently no way to enable...

Make sure the metal side of the ribbon cable at the display end is facing upwards when connecting. Also, check if the power supply is a standard 5V 3A. If the power supply is 5V 1A or lower, it may not be able to power both the Raspberry Pi 4 and the 7-inch screen simultaneously. When connecting th...