There is also a command within the phones that will allow you to update your software version.
This will also cause your phone to update it's towers.
Fortunately, it's possible to force your phone to clear the tower locations stored in memory and query the nearest towers for a signal update. The power cycling will usually cause the location memory of your phone to reset, and powering on again will force it to query the nearest towers.
Press the "End" or "Power" button on your phone, and hold it down for three to five seconds, until the screen goes dark. Verizon users can dial " *228 " and select "2" when prompted to update to local towers.
Press *2 (star then two) to update your Sprint phone.
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This is why on a 4G phone, the PRL is updated frequently and on every reboot.
Some signs that your phone needs to be updated are a larger number of dropped calls and a drain on your battery. Your phone will automatically update to the nearest towers.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.If a tower in my town shows any of these upgrades does this mean that it has gotten NV upgrades?The 2 towers i hit in my town each show 1 data speed upgrade each but no LTE in my area.