How to factory reset CTRONIQ C91I? How to wipe all data in CTRONIQ C91I? How to bypass screen lock in CTRONIQ C91I? How to restore defaults in CTRONIQ C91I?
The following tutorial shows all method of master reset CTRONIQ C91I. Check out how to accomplish hard reset by hardware keys and Android 4.4 KitKat settings. As a result your CTRONIQ C91I will be as new and your Intel Atom Z2520 core will run faster.