Unable to install android app via usb debugging

Question

I know this is an old question but I am trying to install my app the very first time on Redmi note 4. Whenever i try to install it displays a dialog saying..

Installatio

Answer 1

I didn't have to turn off MIUI optimizations (using MIUI v8.5.3.0 MAGCNED). In my case I was blocked by the MIUI security system.

Go to Settings > Additional settings > Developer Options

1. Turn ON USB Debugging
2. Turn ON install via USB
3. Turn OFF Verify apps over USB.

Once you do this MIUI will prompt you whether you want to install your app. You only need to accept permission once.

One strange issue I notice is that I cannot enable install via USB without sim card. However, Once it is enabled I am able to remove the sim.