1. ghender4's Avatar
    I have two unlocked bb's and just got a prepaid sim with ATT but will not work in either one. Getting invalid sim in both. Have not tried another ATT sim yet. Does anyone know if there is a problem with ATT prepaid sim's or do you think it's just the sim?

    Thanks

    Geri H
    05-27-11 12:49 PM
  2. mickrg123's Avatar
    If they are a cdma phones you need to change the network settings to gsm.
    05-27-11 01:18 PM
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