Patent ID: 8213931
Filing Date: 2012-07-03
Classification: H04W

Abstract:
1. A method of acquiring an off PRL carrier system for a mobile telecommunications device having a PRL for use when roaming, the method comprising in order: identifying a PRL for use with a current mobile telecommunications device location and attempting to acquire service at the mobile telecommunications device from one or more carriers listed in the PRL, and determining that such service was not acquired; attempting to acquire service from each carrier on a predefined acquisition group list including only wireless carriers that are not listed in the PRL, wherein the number of carriers on the predefined acquisition group list is greater than one; for each carrier of the predefined acquisition group list for which service is acquired, placing a test call and designating the carrier as available in the list if the test call succeeds; and after testing each acquired carrier on the predefined acquisition group list, acquiring for future service a carrier designated in the list as available.