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BlackBerry® OS Smartphones

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Posts: 1
Registered: ‎10-23-2012
My Device: Blackberry Curve 9300
My Carrier: Cell C

Phone # appears as Unknown

Hi All, when I phone others it appears as Unknown on their caller ID. This suddenly happened, I don't know what caused the change. I went to the area in the online Manual that deals with this, and tried to make the changes, ie

  1. Options icon.
  2. Click Device > Advanced System Settings > SIM Card.
  3. Highlight the phone number.
  4. Press the Menukey > Edit SIM Phone Number.
  5. Type your phone number.
  6. Click OK.

But when I do this, it says "Error Accessing SIM". I don't know what to do next. Tks in advance Smiley Happy