Proximity Sensor Screen Lock is a free Android app developed by Argon Dev under the category of Utilities & Tools. This app allows you to turn your device's display on or off using the proximity sensor. It is strongly recommended to test the app before enabling the service. The app comes with advanced options for each mode and you can limit the functioning of the service only in particular conditions. The app offers a delay feature, the ability to play a sound, and the option to disable the service in landscape mode.

Proximity Sensor Screen Lock is a persistent background service that autostarts on boot and after update. It is easy to use and does not require root access. However, do not use this app if the sensor is faulty. The app provides three options - Screen Off, Screen Lock, and Screen On. It is important to note that the proximity sensor usually sits up near the top speaker. Overall, this app is a useful tool for those who want to quickly turn their device's display on or off using the proximity sensor.