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Do GPS pet trackers work without cell service?
Updated
Not in real time. A GPS pet tracker works out where it is from satellites, but it sends that position to your phone over a cell network. With no signal, your app cannot see the pet until the tracker reconnects. Check coverage where your pet goes before you buy.
What Tractive says happens
- Its trackers use a built-in SIM on 2G and LTE (Cat-M1) networks, and generally work where your cell phone works.
- They cannot use as many frequency bands as a phone, to save battery, so coverage can be thinner in some places.
- With patchy or no coverage, updates come late and LIVE mode struggles. When the tracker reconnects, it sends the positions it logged while offline.
- The battery runs down faster in weak coverage, because the tracker works harder to connect.
Check the map first
The FCC's Mobile LTE Coverage Map shows 4G LTE coverage for AT&T, T-Mobile, UScellular and Verizon, based on the carriers' own modeling. Look up your home, your walking routes and any land your pet roams. A tracker may not use the same network or bands as your phone, so treat a strong phone signal as a good sign, not a promise.
If your area is patchy
- Fi says its Fi Ultra model adds extended coverage on T-Mobile plus satellite for places with limited cell service. It is not one of our picks, and we have not checked its listing.
- The Halo Collar 5 listing says it works with Wi-Fi, Bluetooth and cellular, and on rural land. It is a fence collar that needs charging nightly.
- Radio dog tracking systems with a handheld unit, the kind sold for hunting dogs, do not depend on cell service. They are a different, bigger kit, and not covered here.
What does not help
A Bluetooth tag. In a rural area, few phones pass by to report it. Life360 describes a Tile on a pet as a way to find it by Bluetooth within your home or property.
The checker asks about your signal and adjusts its advice. Picks are on the roundup page.
A tracker is not a microchip
The AVMA says a microchip gives permanent ID that cannot fall off like a collar can, and that microchipped pets should still wear a collar with current ID tags. A chip has no battery and no GPS. It only helps once someone scans your pet, and only if the registry has your current phone number. Keep all three: a registered chip, an ID tag, and the tracker. See microchip vs GPS tracker.