How to lock applications in Xiaomi Redmi Note 4 and wifi sharing with Qr Code

Instructions about how to use wifi sharing with Qr Code:If you want to connect wifi without entering password than using this feature you can do it in one click. First you need to connect any public or secured wifi and after connecting just click on Tap to share password and it will gives QR code for connect auto wifi without enter any password or click. Now scan this QR code in other phone which in you want to connect

 So this feature is also best in MIUI 8 redmi note 4.

App LockThis feature is not available on old xiaomi devices because of this feature is added only on MIUI 8 . Xiaomi redmi note 4 is comes with MIUI 8 , So you not need to update but if you are used other device like as Redmi 2 prime than you need to update MIUI 8 for getting this feature

Basically we are used app lock application for privacy in installed apps but now in MIUI 8 you will get this feature inbuilt in your phone. You need to select your installed apps in which you will be set app lock. So simply going to setting > App lock and choose apps.