OverviewZTE Q MiniBlade

When you turned off the phone press and hold the Volume Up key and the Power button. Wait when the Android logo appears, release the keys. Next open the "Recovery Mode" by pressing the Power button. Now...

Switch on the device and go to "Settings". Next, choose "Backup & Reset". Here click on "Factory data reset". Select "Reset Phone" and "Erase everything"...

Switch on the device and go to "Settings". In Settings go for "Language and input". Next, choose "Language". That's all! The language has been changed!

The phone must be on. Use Dialer to enter the proposed code: *983*22387#. Finally, choose "Yes". Great! Wait until the process is completed.