Why are all incoming SMS on my Windows Mobile Phone from “Unknown Sender”?

Rudy June 23, 2010
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Can somone help me to configure my Windows Mobile Phone 6.5? All my incoming SMS are “Unknown Sender” when in fact the person sending the message to me is on my contact list.

How can I correct this on my phone? Any software that you can recommended?

  1. Rudy
    July 2, 2010 at 8:32 pm

    Thank you "Dontspamme", I will check in to it and let you know if it was solved or not.

    Thank's for responding.

  2. Tina
    July 2, 2010 at 7:51 pm


    were you able to solve this issue? Did the above comment point you into the right direction? Your feedback is much appreciated!

  3. Dontspamme
    June 27, 2010 at 1:16 pm

    Have you checked if a firmware update is available for your phone? Also, some providers use a different notation for the phone number, e.g. placing a 1 in front of non-local area codes or arbitrarily adding a number at the end. Make sure that any such variations of the number arelisted as alternate numbers for the respective contact.