If you have an Android device, you can also check your PRL by tapping Home With Verizon prepping its LTE launch and Sprint lighting up new WIMAX markets, both carriers are spending a lot of time and resources ensuring their current 3G networks are optimized.
This means a lot of adjustments to which towers cover a specific location, as well as the addition of new towers to handle additional traffic.
For most CDMA carriers (including Verizon), you can update your PRL by dialing *228 and selecting the appropriate option.
Other carriers 4G MVNO’s may offer cheaper wireless phone plans but their nationwide coverage isn’t top notch like AT&T’s.
Come to find out, the only way to avoid this is to manually turn off and on your “cellular data” every time you walk through your front door and then do the opposite when leaving your wifi range.
Seriously – To avoid AT&T data charges, this is what you have to do multiple times per day.
Is your phone not holding calls where it previously had a strong signal?
If you have a CDMA device like those found on Sprint and Verizon, you may need to update your Preferred Roaming List (PRL).