I have now had the sim card "authorization error for nearly 24 hours. Only on 3g all this time. If they make me hard reset on this brand new phone for the 4th time I just may take it back. Really what is the point of having to troubleshoot your phone every few days.
you should just have to turn it off and then back on again....check in your settings...data manager and be sure that your data is enabled....and then just do a hard reset....holding down the power button and the volume down button at the same time.....good luck..