How a cellular GPS pet tracker works

What one maker says a collar GPS tracker does with satellites and a mobile network, and the limits it states for coverage, batteries and subscriptions.

A collar tracker is not a microchip, and it is not a lead. This page uses Tractive's own help centre, opened on 14 November 2026, to explain the two jobs that maker describes: finding a position, then sending it to a phone. Other brands are not described here, because their pages were not opened.

Two steps, both of which can fail

Tractive's how-it-works article says the tracker detects a location and then communicates it. The GPS module calculates the device's location from data received from GPS satellites, and the article says this works best with a clear line of sight to the sky.

The same article says a subscription activates a SIM card built into the device. The tracker then uses local mobile networks to send the position to the app. Tractive says agreements with service providers in over 175 countries are what allow that, and that the tracker needs good cellular coverage to send data promptly. It says it does not recommend the tracker where coverage is very weak or absent, because the position is delayed until the tracker reconnects.

We haven't tested this. Figures are as the maker states them (checked 14 November 2026).

Update rates, as Tractive states them. The how-it-works article says that in the default mode you receive position updates around every 10 minutes when the pet is on the move, and less often when the pet is resting, and that LIVE mode in the app updates every 2 to 3 seconds. The subscription FAQ table, on a different help page, says default updates are every 2 to 60 minutes and LIVE updates are every 2 to 3 seconds. Those two pages do not use the same default figure. Neither figure is a measurement from a UK street.

The how-it-works article also describes two aids that are easy to over-read. A Power Saving Zone is said to reduce the effect of GPS interference at home and to improve battery life. Bluetooth on the owner's phone is said to let the tracker update its position when the phone is nearby and mobile coverage or GPS is poor, with a garage given as the example. Neither is a promise that the tracker works indoors.

What the subscription is paying for

Tractive's page on why a plan is required says the tracker sends its GPS position to the phone using 2G and/or LTE (Cat M1) coverage from one of "500+" partners, and that the SIM generates cellular fees which the subscription is charged to cover. The subscription FAQ says there is no real-time tracker from them with no fee, because without a subscription the tracker cannot communicate its location.

The same FAQ says prices vary by plan type (Premium or Basic), billing interval, and country, and it points readers to a plans page rather than printing one sterling price. This guide does not convert a foreign-currency figure into pounds. Use the subscription calculator with the amount on the checkout you are actually looking at.

Basic, where it is offered, is described as one country and 24-hour location history, with monthly or yearly billing in selected countries only. Premium is described as 175 or more countries, 365-day history, public and family sharing, and export of location history, billed yearly, for two years, or for five years, and not monthly. The FAQ says Basic is only in selected countries. It does not say whether the United Kingdom is one of them. Check the plans page for the account you would use.

What this does not tell you

The help pages do not say how heavy the tracker is, how long the battery lasts on a British walk, or what happens on a particular network. Those gaps stay empty here. Collar fit is a separate question, covered for dogs in dog collar, tag and a tracker and for cats in cat collars and trackers. Radio licensing, as opposed to this maker's network story, is in radio, Wi-Fi and mobile coverage.

A tracker that has fallen off reports the tracker's position, not the pet's. Tractive's comparison with a microchip says the tracker can fall off if the collar comes off, and that it needs charging. The legal ID chip is a different object: microchip versus GPS tracker.

Does a GPS pet tracker work without a mobile signal?

Not as a live finder, on Tractive's account. The maker says the tracker cannot send data promptly without cellular coverage, and that a missing subscription means it cannot communicate its location at all. GPS reception and mobile coverage are two different needs.

How often does Tractive say the dot moves?

Its how-it-works article says about every 10 minutes in default mode while the pet is moving, and every 2 to 3 seconds in LIVE mode. Its subscription FAQ table says default updates every 2 to 60 minutes. Quote the page that matches the model you are reading, and treat both as the maker's statement.

Is the home zone the same as knowing the pet is safe?

Tractive describes a Power Saving Zone as a way to reduce GPS interference at home and save battery. That is a power feature in the maker's words, not a welfare check. An animal still needs care whether or not a dot is on a map. The Animal Welfare Act 2006, section 9, as it applies in England and Wales, is the duty to take reasonable steps to meet an animal's needs.

Sources

How does it work / How can I find my pet with a Tractive tracker? — Tractive Help Centre, accessed 14 November 2026.
Tractive subscription plans, frequently asked questions — Tractive Help Centre, accessed 14 November 2026.
Why do I need a subscription plan? — Tractive Help Centre, accessed 14 November 2026.
What's the difference between a microchip and a tracker? — Tractive Help Centre, accessed 14 November 2026.