Install app via usb: The device is temporarily restricted

Question

When I toggle on the install via USB in developer mode:

• it will pop the toast message said that the device is temporarily restricted
• then toggle off the settings.

Is there any solution for this?
I searched through all the way like turning off MIUI optimization but still does not work. I cannot debug my application by Android Studio in this way......

Answer 1

"Install via USB" wont work if your Xiaomi phone is running MIUI 8 or above. Looks like when you try to Enable this option, your phone trys to connect to some chinese server and fails.

I got a work around and it worked for me. Idea is to connect to Chinese-Shanghai server through VPN. Try the following:

1. Install PlexVPN from Playstore and login into it. You will get a 24 hr free VPN service.
2. Select China-Shanghai server and connect.
3. From developer option in your Xiaomi phone, Enable "Install via USB".
4. You can then disconnect the VPN and logout from PlexVPN.

Enjoy!!

Answer 2

All you have to do is Turn your Wi-Fi off, turn on mobile data, and then enable the setting for "Install via USB". It'll go through.

Source: http://en.miui.com/thread-544718-1-1.html