How to factory reset E TEL Q4? How to wipe all data in E TEL Q4? How to bypass screen lock in E TEL Q4? How to restore defaults in E TEL Q4?
The following tutorial shows all method of master reset E TEL Q4. Check out how to accomplish hard reset by hardware keys and Android 5.1 Lollipop settings. As a result your E TEL Q4 will be as new and your core will run faster.
E-tel i2 hard resat - video