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Factory reset BlackBerry 30

Restart or reset your device
If your BlackBerry device is running slower than usual or not responding, turning off and turning back on your device might
help to solve the problem.

Do one of the following:
To restart your device, press and hold the Power/Lock key on the top of your device. Tap POWER.
To reset your device, press and hold the Power/Lock key for ten seconds.

How do I reset my device password if I forget it?
Your BlackBerry Z30 device password can't be recovered or changed if you don't enter your current password correctly. For security reasons, the only way that you can reset your password without knowing your current password is to delete all of your device data. You can do this by entering an incorrect device password multiple times.
BlackBerry recommends that you regularly create and save a backup file on your computer.

General advice: Before you buy a new cell phone or new tablet, please try the following procedure to repair your device in a software way. First charge your battery, backup your important data if possible and in most cases take out SIM and SD card before doing factory reset. It is impossible to recover your data after doing a hard reset, so online backup is always important. For all of your data, a backup should be done on an external device, hard drive, raid system or media. With or without insurance, if your cell phone lost, damaged or stolen at least your invaluable data is backed up in a safe place. If you are about to sell your phone and you want to wipe your personal data, or if your phone affected with virus you have to do a hard reset. In some cases, you can delete the forgotten password or lock pattern from your device as well. All information is for devices with stock based ROMs. If you are using rooted device, always back up your EFS folder first, containing your IMEI info, etc.! Please also note, that a hard reset operation will not unlock your mobile phone's SIM lock or network lock, but it will remove the unlock pattern, remove the user password or PIN password (NOT the SIM card's 4 digit PIN code). Also note that the firmware version will not be affected in any way, it will not be downgraded, it will remain the same you are using and if you have rooted your device, root privileges remain also unaffected.