I found these to be all but useless as well, one on the dog, one our keys and one in the car, basically they will only work when in very close proximity, 3mtrs, and if I walk away, they drop out at 10mtrs, and no we don't have faulty iPhone 12 Pro Max's or 4 faulty Airtags, they are just plain silly, was expecting at least 25 to 35mtrs range from my phone, even when I leave the wife's phone right near the Airtag and track with mine, still drops out at 10mtrs, so either there is a major flaw with the network at the moment and it requires some work from Apple still, or these are just snake oil.
Again, phones and tags are not faulty, phones are on the latest IOS, Wifi is great, internet is great, 4G is great, Airtag range range is very underwhelming.
Again, phones and tags are not faulty, phones are on the latest IOS, Wifi is great, internet is great, 4G is great, Airtag range range is very underwhelming.