The lack of understanding here of the details contained in not just the Supreme Court ruling, but also the 6th Circuit Court of Appeals ruling which it upheld, is creating an unfounded concern over privacy..
The location data being collected by law enforcement in this case is not what you think it is.
Plus, there is existing law which allowed LE to collect the data under a Court Order, which has no probable cause requirement, but does have the test for justification:
It acquired those records pursuant to a court order under the Stored Communications Act,
which required the Government to show “reasonable grounds” for believing that the records were
“relevant and material to an ongoing investigation.” 18 U. S. C. §2703(d).
As for 4th amendment, it's YOUR responsibility to be careful you don't allow LE to collect the data, not the 3rd party's. Unless the provider has a contract with you that states they will not release your info without a warrant, you have no expectation they won't.
When you turn on a cell phone, the phone registers with a cell tower. When you move, the signal registers with towers in the next area, and the next and so on.
By connecting with the service, you are tacitly giving permission for the cell company to use that position information for billing roaming charges, selling the aggregate data for analysis, used by the company and contractors to spot coverage issues, and so forth.
While GPS information can place you in a church, sex shop, strip club, gay bar, mosque, synagogue, government building, etc, the information in this case is nowhere near that accurate. It can place you in an area within a certain radius at a given time for a given duration. That's all. No lat/long, and no specific building/space.
So, 4th amendment is not an issue. You are not being "tracked" to places you visit. You are only being placed in the vicinity of a cell tower. It's normal cell activity for service providers.
If you don't like it, get a burner phone, or take the battery out of your cell when you don't want to reveal the vicinity you're in.
https://www.supremecourt.gov/opinions/17pdf/16-402_h315.pdfhttps://www.leagle.com/decision/infco20160413094