Do not support Xiaomi Redmi 3S.Wave Lock(Wave to Unlock) is the app use proximity sensor to lock and unlock screen by way wave your hand over the proximity sensor. Protect power button on your phone.
[NOTE]
● If you can unlock, please open settings and enable "Fix Unlock" function to retry
● When wave lock not working maybe wave lock service is killed by System or Clean Master app. Please try to check power manager on your device I think can it set app in list power save this can make app not run stable● On Xiaomi device. Please try to do the following tip to make app run stable:
1. Open app
2. Open recent task
3. Drag and drop wave lock icon to bottom when wave lock icon will appear with icon lock
[Feature]
● Support multiple languages (English, Vietnamese, Swedish, Spanish, Russian, Greek, Italian, Polish, German)
● Wave hands over proximity sensor to lock and unlock screen
● In pocket(Do not turn on screen when to put your phone in pocket)
● Easy pause and play app via notification center.
● Disable in Landscape to avoid lock screen when playing game or watching video
● Allow set sensitivity for proximity sensor
● Set time delay before lock screen[User Guide]
To UNINSTALL app
Press button "UNINSTALL" in the app. Or you have to go to "Settings—>Security—>Device administrators" to unchecked Wave Lock administrator policy and after uninstalling Wave Lock app same as normal way .Wave Lock(Wave to Unlock) app free and every easy use. When to use app if you issue any error, please feedback for me
Setup and enjoy!!!If app not working you can use old version here: https://drive.google.com/open?id=0ByJr1P2mVYvsdFRGN29helROcTQIf you like the app, don't forget rate five stars ★★★★★ or review. They are appreciated for me. Thank you so muchHelp us to translate to your language:
http://oskytui.oneskyapp.com/collaboration/project?id=150432Thank for help from translators:
Gustav Dersjö - Swedish
Gilberto leomar - Spanish
Cuneyt O - Turkish
dukenukemf - Russian
George Chorafas - Greek
eu.lorenzozanni94 - Italian
DanieL - Polish
Thomas Gorzka - GermanFacebook fan page: https://www.facebook.com/androidappkimcy929P/s: Communicate google+ groups with me https://plus.google.com/communities/103395796834097167869
Thank you very much.

// Option A //

To download Wave to Unlock and Lock mod from HappyMod.com.
You need enable the option "Unknown Sources".
1. Click on the above link to download Wave to Unlock and Lock mod APK.
2. Save the file in your device Downloads folder.
3. Now tap on Install and wait for the installation to finish.
4. Once it is done, open the game and start playing it right away.

// Option B //

To download Wave to Unlock and Lock from HappyMod APP, you can follow this:
1. Open your browser and download the HappyMod APK file from HappyMod.com - the only official website of HappyMod.
2. Open Android Settings and go into Privacy or Security.
3. Tap the option to Allow Unknown Sources and enable it.
4. Go to your Android downloads and tap the APK file.
5. Follow the directions on the screen to install it.
6. Search Wave to Unlock and Lock in HappyMod App.