The Fi Series 3+ GPS Dog Tracker is a significant step up from previous generations. The core improvement is straightforward: the GPS performance has been doubled. That means the collar locks onto your dog’s location faster and maintains a more stable connection, whether you’re deep in a city park or out on a rural trail. It uses a combination of Bluetooth, cellular, and Wi-Fi to keep you connected nationwide with no range limits.

The real daily value comes from the escape alerts. You set up custom virtual fences inside the Fi app. If your dog crosses one of those boundaries, your phone gets a real-time notification. The system checks in every few minutes, so you’re not left guessing. The collar itself is built for an X-large dog, and it comes in pink. It includes a charger and USB cable in the box, with one nonstandard battery included.

Battery life is the trade-off here. Because the collar is constantly communicating via cellular and GPS, you will need to charge it more frequently than a simple Bluetooth tracker. It’s not a set-and-forget device. For owners of large dogs who tend to wander, the accuracy and instant alerts make that extra charging worth the effort.