Network updating prl
Apple assumes no responsibility with regard to the selection, performance, or use of third-party websites or products. Other company and product names may be trademarks of their respective owners.Generally PRL updates are done on CDMA and PCS phones. Without a PRL file your cell phone would only receive service on its primary carriers network.Eliminating coverage in areas where your carrier does not receive service.Updating the PRL will store in the phone which are the most up to date, current networks to operate on.
If your carrier releases a mandatory update, you'll see an OK button instead of an Update button to let you know that the update was downloaded and installed.
You can manually check for and install a carrier settings update using these steps: Information about products not manufactured by Apple, or independent websites not controlled or tested by Apple, is provided without recommendation or endorsement.
For more information on what is included in a carrier settings update, contact your carrier.
When a carrier setting update is available, you will be prompted to install it.
Almost all phone carriers, such as Oxygen, Locus, Cingular, Verizon, etc.have roaming agreements with other major service providers.