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  1. Oct 25, 2022 · To perform a hard reset, remove the battery for a few seconds and then reinsert. For a soft reset, press and hold the Alt, Right-Shift, and Backspace/Delete keys. To restore your Blackberry to its original factory settings, go to Options > Security Settings > Security Wipe.

  2. Apr 13, 2024 · 1. Restart your device: Sometimes a simple restart can resolve minor issues. Power off your device, remove the SIM card, wait for a few seconds, and then reinsert the SIM card and power on your device. 2. Check SIM card compatibility: Ensure that your device is compatible with the SIM card you are using.

  3. Apr 27, 2016 · There are a number of simple ways to do this, from removing the phone’s battery to wiping its settings. These methods should cover most BlackBerry devices, but there may be specific ways to reset your device’s particular model. You can find these in your phone’s instruction manual.

  4. Step 1. Insert the SIM card into your phone. Step 2. Access the "Phonebook" menu options and select "Management" or "Settings." Step 3. Choose "Delete All" and confirm the action. The phonebook has now been reset to default status. Step 4. Access the "Messages" menu options and select "Settings." Choose "Delete All" from the available options.

  5. If you don't have a SIM card or don't have the right type of SIM card, contact your service provider. CAUTION: Do not use a larger SIM card that has been cut to a smaller size. Your device might not recognize it, or the SIM card might get stuck because it is thicker than a nano SIM card.

  6. 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.

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  8. Restore factory default settings - BlackBerry 8520 Curve. 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. Press the Menu key.