This allows the phone to choose the best roaming carriers, particularly "roaming partners" with whom the home carrier has a cost-saving roaming agreement, rather than using non-affiliated carriers.PRL files can also be used to identify home networks along with roaming partners, thus making the PRL an actual list that determines the total coverage of the subscriber, both home and roaming coverage.
Depending on the cause of your signal problems, it is possible that despite troubleshooting, your phone may continue to have a low signal. Remove your phone's battery for at least one minute.
Each system table entry belongs to a geographic area known as a GEO. Each IS-95/1x RTT system is identified by either SID/NID or, in the case of enhanced PRL, SID/NID or MCC/MNC. IS-95/1x RTT and 1x EV-DO), association tags are used link an IS-95/1x RTT system with one or more 1x EV-DO systems.
To support 1x EV-DO systems, the PRL must be IS-683-C or later. Hybrid systems always attempt to select an IS-95/1x RTT system first, then use the association tag to attempt to select an associated 1x EV-DO system.
We'll give you plenty of notice: You’ll still be able to access your old mailbox for 30 days by pressing  at the main menu of your new mailbox.
Messages will be available until they are deleted following the normal schedule.
The PRL is built by an operator and is normally not accessible to the user.