1. Open the phone to enter the setting function, then slide the screen to drop the menu to the bottom and select the options about the phone.

2. In the item about mobile phones with version numbers, we quickly click version numbers 7 and 8 with our fingers until we prompt the developer that the option has been turned on and quit.

3. Back to the settings at this time, we can already see that the developer option is already in the menu, the third from the bottom.

4, open the developer options, we can find some settings that are often needed, such as viewing the running services of the system, Webview implementation, etc.

5, pull down the screen, we often use a USB debugging when connecting to the computer, and other settings.