If your device cannot send a signal to its cell provider, then it can use the tower of another cell provider at an additional cost. This alternative cell provider is determined by a priority list called the PRL, which includes:
- Other carrier networks
- Frequency other carrier networks operate at Helps in optimizing data transfer speeds.
Baseband / Over the Air Updates
The PRL is updated frequently through Baseband updates that are sent over Cellular Data or WIFI. This updates the locations of Cell Towers
Product Release Instructions
A baseband update including important fixes and improvements for:
- GPS
- Cellular connectivity
- Messaging