Info about PRL for those that don't understand it and what it does
C&P from Sprint website
The Preferred Roaming List (PRL), a file located in your phone, is used to acquire both the Sprint network and Sprint roaming partner's network for you while you are roaming off the Nationwide Sprint Network or Sprint 3G network. Sprint updates the PRL a few times a year to provide you with new domestic digital roaming coverage or with international roaming coverage or to make other necessary adjustments.
Sprint sends PRL updates to handsets/PDAs Over-the-Air (OTA) as needed. However customers can also proactively receive PRL updates via their device settings. For instance, newer devices have a menu screen to perform a PRL update, Settings > Phone Info > Update PRL. The device will check for an update and complete the transaction in less than a minute.
Mobile Broadband Cards receive PRL updated via Sprint Smartview Auto Updates.
A PRL update will not:
C&P from Sprint website
The Preferred Roaming List (PRL), a file located in your phone, is used to acquire both the Sprint network and Sprint roaming partner's network for you while you are roaming off the Nationwide Sprint Network or Sprint 3G network. Sprint updates the PRL a few times a year to provide you with new domestic digital roaming coverage or with international roaming coverage or to make other necessary adjustments.
Sprint sends PRL updates to handsets/PDAs Over-the-Air (OTA) as needed. However customers can also proactively receive PRL updates via their device settings. For instance, newer devices have a menu screen to perform a PRL update, Settings > Phone Info > Update PRL. The device will check for an update and complete the transaction in less than a minute.
Mobile Broadband Cards receive PRL updated via Sprint Smartview Auto Updates.
A PRL update will not:
- Improve signal strength on Sprint Network or off network roaming areas
- Help with dropped or blocked calls, or coverage holes
- Help with wireless web issues
- Correcting misrouted calls when roaming