1. Enable Developer options
The Developer options screen is hidden by default. To make it visible, you can do as follows:
On the phone's LCD, enter Menu -> Status, click the Version entry 7 times to enable the Develop mode.
After you enable it, you can enter the Android Develop options screen on the phone's LCD -> Menu -> Advanced (enter the password, default is admin) -> Developer options.
2. Connect your device with USB
Scroll down the Developer options screen and enable USB debugging. Now you are able to connect the device with USB.
Only the Type-C interface supports USB debugging.
For the models without a Type-C interface, or you don’t have a Type-C USB cable, you can still connect the device through Wi-Fi. Please refer to the next section - #3.-connect-to-a-device-over-wi-fi
3. Connect to a device over Wi-Fi