If you can not remember the lock screen password, you may need to reset the phone. There are two ways:
A. Enter the incorrect password multiple times. On some devices, you will have a prompt to reset the phone. Follow the instructions to format.
B. Master reset with hardware keys. Do this by following these instructions:
- Turn off the device.
- Press and hold the Volume Up and Power buttons until the ZTE logo screen appears, then release.
- Press the Volume down button to highlight wipe data/factory reset.
- Press the Power button to select.
- Press the Volume down button repeatedly until Yes -- delete all user data is highlighted.
- Press the Power button to select.
- Wait as the device resets.
- Once complete, press the Power button to select Reboot system now.
PLEASE NOTE THAT NO DATA WILL BE SAVED! MAKE SURE YOU HAVE A BACKUP OR SOME WAY TO RESTORE YOUR PHONE! YOU HAVE BEEN WARNED
Credit to T-Mobile for these instructions: support.t-mobile.com
If you still have any issues please reply to this answer.
Thanks,
John
EDIT:
Thank you for the comment, here is your new instructions:
1. Start device by pressing Power button.
2. Now go from Standby screen to Main menu select the Reset Settings.
3. Next on mark Master Reset and confirm whole operation by pressing left Softkey.
4. Type in Security Code for confirmation (Default code is 0000).
REMEMBER THIS WILL ERASE ALL DATA
If you need more help please reply to this comment.
Thanks,
John
Thanks. I'll try and find a solution.
John さんによる
If you know your account information, call your service provider. They should be able to reset it for you.
John さんによる