NEVER LOSE YOUR DOG - Fi GPS Dog Collar Review 

Hmm my light doesn’t come on on either of the 2 collars I have. Customer service I think? Just strange that they both don’t work

Where did you get the accessory piece so you can attach it to another collar?

In a city, one could just use an apple airtag + a collar accessory

Online reviews (e.g., Reddit) on Fi aren’t great. People complain about lack of accuracy, particularly in rural areas. People also complain about it being extremely difficult to cancel subscriptions. Hmmm…