BlackBerry Z30 hard reset: To restart your device, press and hold the Power/Lock key on the...

BlackBerry Z10 hard reset: In the device options, click Security Options...

Solved: How to hard reset BlackBerry 8900 Curve: From menu select Menu key > Options > Security Options > Security Wipe...

Solved: How to hard reset BlackBerry 9300 Curve: From menu select Menu key > Options > Security Options > Security Wipe...

Solved: How to hard reset BlackBerry 9000: From menu select Menu key > Options > Security Options > Security Wipe...

Solved: How to hard reset BlackBerry 9100: From menu select Menu key > Options > Security Options > Security Wipe...

Solved: How to hard reset BlackBerry 9600: From menu select Menu key > Options > Security Options > Security Wipe...

Solved: How to hard reset BlackBerry 9670: From menu select Menu key > Options > Security Options > Security Wipe...

BlackBerry 8320 hard reset: In the device options, click Security Options...

BlackBerry 8120 hard reset: In the device options, click Security Options...

BlackBerry 8500 hard reset: In the device options, click Security Options...

BlackBerry 8220 hard reset: In the device options, click Security Options...

BlackBerry 7100 hard reset: In the device options, click Security Options...

BlackBerry 7200 hard reset: In the device options, click Security Options...

BlackBerry 8300 hard reset: In the device options, click Security Options...

BlackBerry 8100 hard reset: In the device options, click Security Options...

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.