Blackberry phones, like any other phones, may start having issues after using them for a while. When your bb 8707v stops working properly and you need to use it urgently, then it becomes necessary to hard reset the phone.
Hard resetting is mean erasing all information and data from a mobile device and restoring it to the factory settings.
As a result, you could lose your necessary data. It is hence necessary that you back up any important data in your laptop, cloud backup, or google drive before hard resetting your BlackBerry 8707v.
If you can remove the battery in your 8707v do it first. Some user says after that phone works well again.
Open the battery cover of your smartphone and remove its battery.
Press and hold the Power key for no more than ten seconds.
Put the battery back, close the cover and turn the phone back on.
Hard reset Blackberry 8707v by Menu:
• Unblock your Device
• Go to the Main menu
• Find And Select Options (Settings)
• Choose Security and Privacy
• Next select Security Wipe
• Enter word confirmation “blackberry”
• Check all boxes
• Wipe data
How to soft reset blackberry 8707v by button combination
This reset does not remove any data it’s like restarting and using it when your phone freeze or is unresponsive.
• Press and hold the Alt key
• Keep holding the Alt key, and press and hold the Right Shift key.
• With both of those buttons still pressed, press the Backspace/Delete key
• When the screen turns off to indicate that the BlackBerry smartphone is restarting, you can then release the keys you have been holding.
If you forgot your password On BB 8707v some users say that you need to type the wrong password “blackberry” a few times and your phone will be reset. (I am not sure if this will work with BB OS)