How to factory reset ZTE R221? How to wipe all data in ZTE R221? How to bypass screen lock in ZTE R221? How to restore defaults in ZTE R221?
The following tutorial shows all method of master reset ZTE R221. Check out how to accomplish hard reset by hardware keys and Vendor settings. As a result your ZTE R221 will be as new and your core will run faster.
Hard Reset will erase all of your data
All described operations you are doing at your own risk.