The Fi Series 3 Smart Dog Collar and GPS Tracker is a feature-packed device designed to keep your dog safe and healthy. It combines real-time GPS tracking, activity monitoring, and escape alerts in a durable, waterproof collar. Based on product details and customer feedback, this collar is ideal for active dog owners who want to monitor their pet’s location and activity levels without worrying about monthly subscription fees (though a data plan is required).

If you’re exploring options for keeping your dog safe, check out our full Dogs gps dog tracker guide for more comparisons.

Quick Verdict

  • Best for: Active dogs who roam or have a tendency to escape, and owners who want activity tracking.
  • Not ideal for: Small or short-haired dogs due to collar bulk; owners unwilling to pay a monthly data fee.
  • Main benefit: Reliable GPS tracking with long battery life and no extra subscription beyond data plan.
  • Main concern: Requires cellular data plan; collar may be uncomfortable for some dogs.

Product Overview

The Fi Series 3 is a smart collar that integrates GPS, cellular, and activity tracking. Key features include real-time location updates, safe zone alerts (geofencing), step counting, sleep tracking, and a built-in LED light for visibility. The collar is made of a rugged, waterproof material (IP68) and has a breakaway safety buckle to prevent choking. It comes in two sizes: small (neck 8-14 inches) and large (14-24 inches). The target dog is medium to large breeds that are active or prone to wandering.

Who This Product Is Best For

This product is best for owners of medium to large dogs who have a high prey drive, like to roam, or are escape artists. It’s also great for those who want to monitor their dog’s daily activity and sleep patterns to ensure they are getting enough exercise and rest. The long battery life (up to 3 months) makes it convenient for owners who don’t want to charge frequently.

Who Should Avoid It

Owners of very small breeds (under 10 lbs) should avoid this collar as it may be too heavy. Also, those who are not comfortable with a monthly data plan (starting at $9/month) should look elsewhere. The collar’s bulk may also be unsuitable for short-haired dogs prone to skin irritation.

Key Features

Real-Time GPS Tracking

The Fi Series 3 uses GPS and cellular triangulation to provide accurate location updates. When your dog leaves a designated safe zone, you receive an instant alert on your phone. The tracking works nationwide (US) with no additional subscription beyond the data plan.

Activity and Sleep Monitoring

The collar tracks steps, distance, and sleep quality. Based on customer feedback, this feature helps owners ensure their dog gets enough exercise and rest. The data is available in the Fi app, which also sets daily goals.

Durable and Waterproof Design

Rated IP68, the collar can withstand submersion in water and is dustproof. The breakaway buckle is a safety feature that releases under pressure to prevent choking if the collar snags.

Long Battery Life

Battery lasts up to 3 months on a single charge, depending on usage. This is significantly longer than many competitors, reducing the need for frequent charging.

Performance and Use Case

In real-life situations, the Fi Series 3 performs well for dogs that roam. The GPS accuracy is generally within 10-30 feet in open areas, though urban canyons or dense forests may reduce precision. The collar is comfortable for most dogs, but some owners report that the module is slightly bulky. The breakaway buckle works as intended, providing peace of mind. The app is user-friendly and sends timely escape alerts. However, the data plan cost can add up over time.

How It Compares

Compared to the Whistle GO Explore, the Fi Series 3 offers longer battery life (3 months vs. 14 days) but the Whistle includes health monitoring features like scratching and licking. The Whistle also has a lower upfront cost but similar data plan fees. Another competitor, the Tractive GPS Dog Tracker, is more affordable with no long-term contract, but its battery lasts only 2-5 days and it lacks activity tracking. Overall, the Fi is best for owners who prioritize battery life and simplicity.

Buying Advice

Before buying, consider your dog’s size and activity level. The collar is best for dogs over 20 lbs. Check the neck measurement and ensure the collar fits snugly but not too tight. The data plan is essential for GPS to work, so factor that into your budget. If your dog swims frequently, the IP68 rating is a plus. Always consult your vet if your dog has skin sensitivities or if you have concerns about wearing a collar long-term.

Final Verdict

The Fi Series 3 Smart Dog Collar and GPS Tracker is a reliable and durable option for active dog owners. It offers excellent battery life and accurate GPS tracking, though the monthly data fee and bulky design are drawbacks. For medium to large dogs that roam, this collar provides peace of mind and useful health insights. We recommend it for owners who want a set-it-and-forget-it tracker.