They don't need to get your GPS location. With 4G and 5G the timing and clock precision at the basestations is enough to multi-laterate you down to about 50m (prior 3G/2G stuff was more like 100-200 meters). They are required by US law to store this multi-laterated position data track (updated every time your phone announces itself to basestations) for 2 years. But most telcos store it for more like 5+ years because it's valueable and they sell it.

This is all automatic and completely pervasive. Worrying about GPS and userspace computers in the smartphone is important but even if you protect that you've already lost. The baseband computer is announcing your position by the minute. Cell phones couldn't really work without the basestations deciding where you are and which will handle you.

What law requires carriers to keep Cell Site Location Information for 2 years?