To save energy, the display of the Android smartphone turns off automatically after a few moments and the device locks. Pressing the power button on one side of the device allows you to bring up the time and the phone unlock screen.
But how to turn on the Android smartphone without touching any button?
On devices equipped with a fingerprint reader or support for facial recognition, simply touching the sensor or approaching the face will not only turn on the smartphone but also unlock it. The important thing is to have activated the unlocking by fingerprint or by facial recognition in the Security section of the Android settings.
Many Android devices (such as Samsung, Google, Xiaomi, OnePlus and others smartphones) integrate a feature that, by double tapping the screen, allows you to "wake up" the device. The Double tap to toggle screen option is found within the always-on display and lock screen settings.The free WaveUp application allows you to turn on or lock your smartphone by simply covering the proximity sensor with one hand.
By tapping Number of steps and then choosing 1 (cover, uncover) you only need to cover the proximity sensor once to turn on the Android device.
The Pocket mode option, if activated, allows the device to be switched on automatically when it is removed from a pocket or bag.
By scrolling to the bottom and choosing Notification Settings, you can turn off the appearance of the persistent WaveUp notification.To lock the Android smartphone by covering the proximity sensor, it is necessary to activate the WaveUp lock screen option. To enable this possibility, however, it is essential to configure WaveUp as an "accessibility service" by acting on the Android settings.
WaveUp will have to be subtracted from the particularly aggressive energy saving functionality that many smartphones integrate.
Selecting Battery, App Power Saver or a similar item in the Android settings you will have to choose No optimization to prevent the power saver from preventing the app from working properly.
Going to the Accessibility section and activating the "accessibility menu" you can bring up an accessory menu that allows you to block or turn off the mobile device by touching a specific icon.
The "accessibility menu" does not allow you to turn on the smartphone but still allows you to lock it or turn it off without pressing the button.