OverviewZTE A521Blade E02 Dual SIM TD-LTE

Switch off the device. Hold down the Volume Up key and the Power button. When the "Boot Mode" appears, release the keys and open the "Recovery Mode" using the Volume keys. Now hold down...

Switch off the phone, then hold down the Volume Down key and the Power button. Next, choose "Clear eMMC" using the Volume keys and the Power button. All done! Wait until your device restarts.

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.

When you turn on the device, open the "Settings". Then choose "Advanced settings". Here select "Language and input". Finally tap on "Language". Successfully! Language changed.

Use the emergency dialer to enter the proposed code: *983*22387#. Next choose "Erase everything" to confirm. Nicely done! The device data will be deleted.

Go to "Settings" and then choose "Advanced settings". Now select "Backup&Reset". Next tap on "Factory data reset". Tap "Reset phone" two times to finish the process. Good...

When you turn off the phone, hold down the Volume Up key and the Power button. Wait until the "Android" logo appears and then release the buttons. Now open the Recovery Mode by pressing the Power button. In...