Can bounty hunters track cell phones?
It’s not unusual for a bounty hunter to use any means reasonably necessary to apprehend someone who doesn’t want to be found. Obtaining location-identifying information is easier than most people might expect, and bond agents are usually expert investigators.
Avoiding detection from a bounty hunter is nearly impossible and never worth doing. The contract that a defendant signs with their bondsman gives a lot of leeway in how you can be apprehended.