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  1. Oct 25, 2022 · 1. Open the battery cover on the back of the BlackBerry. Remove the battery from the phone. You can perform a hard reset on the BlackBerry Z10 by pressing and holding the Power button on the top of the phone for about 10 seconds. [1] 2. Reinsert the battery after a few seconds.

  2. Page 36: Phone Troubleshooting. 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.

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  4. Apr 27, 2016 · Whether you’re jump starting a frozen phone or restoring a handset to factory defaults before passing it on, sometimes you need reset your Blackberry to get it working again. There are a number of simple ways to do this, from removing the phones battery to wiping its settings.

  5. The first is to reset the password from your device by tapping or clicking the "Forgot Password" button when prompted to sign into your BlackBerry ID. You will have to answer your security question and follow the on-screen instructions. The second option is to reset your password from a computer.

    • Shea Laverty
  6. Restore factory default settings - BlackBerry 8520 Curve. Read help info. 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".

  7. Dec 4, 2014 · 991K subscribers. 162. 108K views 8 years ago. How to remove user password by wipe BLACKBERRY 8520 Curve. After hard reset in BLACKBERRY 8520 Curve your phone will be like new without any...

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    • HardReset.Info
  8. May 29, 2009 · If not, go into Options/SIM Card or Options/Advanced/SIM Card (I forget how it is layed out exactly since I don't have a GSM device in front of me now), but in there you can hit Menu and get an option for SIM Card Phone Number, which you can edit or whatever if it's wrong, but it shouldn't be wrong if you put in YOUR SIM card from your old ...