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12 Σεπ 2013 · Enable "Allow power button to unlock phone", or something like that, and Hit the top button?
By locking the screen, you can help prevent your BlackBerry device from sending accidental messages or pocket dialing. Locking the screen doesn't turn off notifications for incoming calls or messages. Press the Power/Lock key on the top of your device. To unlock the screen, swipe up from the bottom of the screen.
If the screen flickers or flashes when transitioning between apps, it may be a software issue that can be resolved with an update. Make sure your device has an internet connection, and your battery is at more than 50% charge or charging while installing.
BlackBerry smart mobile phones have a history of issues where the phones do not turn on or turn on for a few seconds before they shut off again. A number of troubleshooting options are available. In a worst case scenario, a total reboot of the phone's operating system will be required.
My Blackberry Passport doesn't turn on for unknown reasons but if I connect the battery charger, red light turn on. I need help, my phone still off.
For the vast majority of users, folks have been stuck at the wireless settings screen--in other words, they're stopped at wifi, not at the SW update screen or anywhere else. Some on Passports have not had this issue but this fix is the one that is confirmed to work for all BB10 users and all devices.
You can lock the keyboard and screen to avoid pressing a key or the screen accidentally or making calls accidentally and, if you have set a BlackBerry smartphone password, you can also lock your smartphone with a password.
