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  1. Oct 25, 2022 · Download Article. 1. Press and hold the Alt key. This method will reset your BlackBerry without having to remove the battery. You cannot perform this method if your BlackBerry does not have a keyboard. 2. Press and hold the Right Shift key. Continue to hold the Alt key while you hold the Shift key. 3.

  2. My phone number appears as Unknown in the phone application If your BlackBerry® device uses a SIM card, try changing the phone number on your SIM card to change how your phone number appears in the phone application. On the Home screen or in a folder, click the Options icon. Click Advanced Options. Click SIM Card. Highlight the phone number.

  3. When you restore the factory default settings, all personal settings are reset. Follow these instructions to restore the factory default settings. All phone data will be deleted. Data on the SIM card is not deleted. Step 1 of 10. Find "Wipe Handheld". Press the Menu key. Step 2 of 10. Find "Wipe Handheld".

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  5. Step 4. Access the "Messages" menu options and select "Settings." Choose "Delete All" from the available options. If this is not an option, access the "Inbox" and view one of the existing messages. Click on "Options" and select "Delete All." Depending on the cell phone you use, the options might vary. It might be necessary to click on "Delete ...

  6. Aug 15, 2022 · Here are a number of fixes: Ensure the SIM is properly inserted. Test the SIM card on another device to be sure its still active and in good condition. Remove dust, rust or any foreign material inside the SIM slot. Ensure ‘Mobile networks’ is set to ON (Go to Home screen > Manage connections > Ensure Mobile networks in set to ON) Take a ...

  7. If you can't reset your password, your only option is to completely reset the phone. A full security wipe can be initiated from within the operating system, as detailed below. However, when you're locked out of the operating system, your only option is to force the automated security wipe.

  8. Sep 23, 2023 · If the issue persists, reset your SIM card. Turn off your phone. Use the SIM card removal tool or a paperclip to pop out the SIM card tray, remove the card, and then carefully place the SIM card back into the SIM card slot. Then turn the back cover on if necessary and turn on the phone. Test SIM Card in Another Device. Try the SIM card in ...

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