In standby mode, if there are new message notifications, the screen does not wake up automatically. Additionally, when the screen is locked, pressing the wallpaper does not activate the screen as it should. These issues are caused by the absence of the sponge pad in the light sensor module during the disassembly and reassembly process. The solution is to reapply a sponge pad on the screen to properly isolate the sensor, which will fix the problem.