Gray-Switch (Grayscale) on PCGray-Switch (Grayscale), coming from the developer Vegard IT GmbH, is running on Android systerm in the past. No more eyeing the battery or frustrating calls at the wrong time any more.Just enjoy Gray-Switch (Grayscale) PC on the large screen for free！Gray-Switch (Grayscale) Introduction**IMPORTANT** If your phone is not rooted, you need to manually grant the WRITE_SECURE_SETTINGS permission to the app, detailed instructions on how to do this are provided within the app and in this video https://youtu.be/Rf3WndFgftIGray-Switch allows you to conveniently switch your device's display mode between full color and grayscale either using a quick settings tile (Android 7 or newer), a launcher icon, automatically when the battery charge has fallen below a configured value, and/or during a configurable time schedule (e.g. at night time).If you are running Android 9 (Android P) or newer you don't necessarily need this app. You can also use the built-in Digital Wellbeing/Wind Down setting. However, it does not allow you to exclude applications from grayscale mode nor automatically enables grayscale mode on low battery.**Setup:** Connect your phone to a PC with Android SDK installed and execute the following command after you installed the app:adb shell pm grant com.vegardit.grayswitch android.permission.WRITE_SECURE_SETTINGSProvider Identification:Vegard IT Gesellschaft mit beschränkter HaftungWürzburger Straße 15263743 AschaffenburgGermany Represented by: Sebastian Thomschke, Patrick Spielmanne-Mail: android-support@vegardit.comRegister Entry in Handelsregister:Register Court: Amtsgericht AschaffenburgRegister Number: HRB 16384V.A.T. Identification Number: DE284087225