Specifying Available Telecommunication Standards in Respective Geographic Regions Based on Mobile Country Code

摘要

A user equipment (UE) device may communicate according to at least two telecommunication standards. The UE may generate a second preferred roaming list based on a first preferred roaming list. The first preferred roaming list may indicate geographic locations which support a first telecommunication standard, of which some may also support a second telecommunication standard. The second preferred roaming list may indicate geographic locations which support only the first telecommunication standard and may also indicate geographic locations which support both the first telecommunication standard and the second telecommunication standard. The second preferred roaming list may be used to perform roaming, which may facilitate the UE avoiding searching for the second telecommunication standard in geographic locations which support only the first telecommunication standard.