Samsung A9 (2016) mobile phone activation developer Options diagram (A9000)

A9000 for the Android 5.1.1 system to connect 91 assistants, Baidu assistant, etc. as long as the computer connected to the need to open the USB developer mode, specific as shown below.

1. In the Samsung A9 (2016) Mobile phone standby box We slide to the screen.



2. Click the "Settings" option to enter the effect as shown below.



3. Then find the "about mobile" option in the interface, as shown below.



4. Click on "Software Information".



5. After clicking the "version number" 7 times, the "developer mode is enabled" will be prompted.





6. Click on the "←" icon to the "Settings" page, you can see the "developer options."

If you want to restore to the factory settings as long as the phone back to the factory set up, at this time need to back up the important mobile phone data, otherwise mobile phone contacts, phones, applications will be lost Oh.