However, if your phone is 4G and has a SIM card, updating your roaming towers in this way can do more damage than good to your SIM card.
If you own a Verizon 4G device, the update of the nearest towers is an automatic process, and you do not need to take any action to keep your phone updated.
This is why on a 4G phone, the PRL is updated frequently and on every reboot.
If this is done regularly, you will enjoy the best possible service with Verizon.
There are two types of Verizon phones and each has a different way of updating roaming towers.
If your phone is 3G and does not have a SIM card, you can easily update your towers by dialing *228 and choosing option 2.
I seem to remember people talking a while ago about a code you type on your BB to update the cell tower locations.
My friend has an 8703e and is having trouble receiving voice mail notifications and his signal seems screwy.