The FCC has shared the providers’ responses on their site looks like this was released in August, 2022.
AT&T retains cell-site-level data (which can give a user’s approximate location) for five years, while Verizon keeps this data for one year.
Mint Mobile is who I was interested in and the store for 18 months. Interesting read of how they handle location data. My plan is up in a couple weeks, my plan is to really pay attention to my next set up. Last time was a make it work effort.