Android Studio does not recognize my Xiaomi Redmi Note 3

=> For Enabling to developer Mode In Redmi Note 3 :

1: Go to Setting.

2: Click to "About phone" option.

3: Press 7 times to "MIUI version" option.

now you will see a Toast message "now you are developer".

=> Now you should install to Mi PC Suite from this .

1: Install the pc suite with connected your redmi.

2: Now go on Permission in setting and click "install via USB".

=>For Enabling USB Debugging :

1: Open Settings > Additional settings > Developer options.

2: Firstly enable to developer options then go below and find USB Debugging and enable it.

3: When your pc suite open then again repeat disable and enable to USB Debugging

For Redmi 4a also follow :

Open Settings > Additional settings > Developer options > Select USB Configuration > MTP.

I am not sure if you are always looking for a solution. However, I had the same problem, and to fix it, just try the following steps (it works for me):

1. Go to Settings > Additional settings > Developer options
2. Disable the "Turn on MUI optimization"
3. Reboot your phone

It should work after rebooting your device. Good luck

Xiaomi interface has a lot of "locks". To use your Xiaomi device to test your apps you need to:

• enable developer mode:

  • Settings > About Phone > MIUI version.
  • Tap the MIUI version message until you receive a message telling you that you are a developer.

• enable usb debugging (inside the developer menu).

• enable fast-booting (I don't know if this one is necessary).

• install the Mi PC Suite.

• Use a USB port from behind of your computer.

• allow third party's apps on your device.

• Go To Settings > Additional Settings > Developer Options
• Now Enable these options
  • USB Debugging
  • Install Via USB
  • Select USB Configuration to MIDI