The Fi Mini GPS tracker is praised for its unobtrusive design that doesn't bother pets wearing it, making it ideal for indoor cats that occasionally slip outdoors. PCMag editors noted its reliable GPS tracking and long battery life, which minimizes the need for frequent recharging or maintenance. However, some reviewers found the feature set basic, lacking advanced analytics or offline tracking capabilities. This device is best suited for pet owners seeking simple, dependable location tracking rather than comprehensive pet monitoring systems.
Full review
All-black case stands out against light fur
The Fi Mini measures 1.65 by 1.18 by 0.49 inches (HWD) and weighs just 0.56 ounces, making it significantly smaller and lighter than its larger counterparts like the Fi Series 3+ which weighs 1.65 ounces. PCMag's Tyler Hayes noted that the device is all black, which makes it noticeable against lighter fur, but the compact size ensures it adds almost no weight to a collar. The tracker comes with two simple rubber bands that secure it to collars measuring 0.37 to 1.25 inches wide. This design allows for easy attachment and removal, as demonstrated by Hayes' Bernedoodle Mya, who never pawed at or tried to remove the device after weeks of uninterrupted use. The Fi Mini is rated IP68 for water and dust resistance, which is crucial for pet safety. However, some users have noted that the device's size may be too large for very small pets, with Reddit user 'Champers' from Trail & Kale stating that while the Mini suits her 15-year-old Siamese cat well, it might look bulky on smaller animals. The device includes a USB-C charging port, which is appreciated for its convenience, though the charging process can be slightly cumbersome when removing the device from its rubber attachment for charging.
Dropped to 45 percent after just 20 days
Fi claims the Fi Mini can last up to six weeks on a single charge, but real-world testing has shown varying results. According to PCMag's Tyler Hayes, the battery went from full to 75% in 10 days, and after 20 days of wear, it was down to 45%. Hayes noted that battery life depends heavily on usage patterns, particularly how much time the device spends connected to home Wi-Fi versus using cellular radio. The Fi Base, which costs $39, can extend battery life to up to three months, though the Mini cannot charge on the Base like the Series 3/3+. Wired's Molly Higgins reported charging the device about every two to two and a half weeks, while Trustpilot reviewers noted that some users experienced battery issues, with one reviewer stating their battery went dead within a few days. The device's USB-C charging port is convenient, but the ease of charging varies depending on how the device is attached to the collar. Some users, like those in the Trustpilot reviews, have complained about inconsistent battery performance and frequent charging needs.
Location Tracking and Alerts
The Fi Mini offers reliable GPS tracking and escape alerts, with most notifications reaching the user's phone within about two minutes of a pet leaving the designated safe area. PCMag's Tyler Hayes noted that escape alerts were mostly consistent, though occasionally inconsistent. Wired's Molly Higgins reported that alerts sometimes lagged, particularly when the pet was outside the safe zone, and she was mistakenly alerted that her cat escaped three times during testing. The device connects via Bluetooth to the Fi Base to reduce power consumption and extend battery life, which is a significant improvement over previous models. However, some users have reported issues with location accuracy. Trustpilot reviewers noted that GPS tracking is often inaccurate, with one reviewer stating that the walking track information shown is 'very seldom accurate' and sometimes 'WILDLY INACCURATE.' The app requires the phone to be open to function properly, which can be a limitation for some users. The Fi Base helps improve location accuracy and extend battery life, but it's an additional cost that not all users may find necessary.
Activity and Sleep Tracking
The Fi Mini provides detailed activity and sleep tracking, which is one of its strongest features. PCMag's Tyler Hayes found that the device accurately tracks activity and sleep, with comprehensive location tracking and useful insights. Wired's Molly Higgins appreciated the health metrics and sleep tracking, noting that the app allows users to view daily stats without needing a wearable screen. The device tracks sleep patterns, activity levels, and even provides insights into eating and drinking behaviors. However, Trustpilot reviewers have noted that the eating and drinking details in testing were inaccurate, with one reviewer stating that the device 'mistakenly alerted that my cat escaped three times during testing' and another noting that the walking track information shown is 'very seldom accurate.' The app also includes heat maps and walk replays, which are useful for understanding pet behavior and movement patterns. The AI health insights are set to launch in the fall of 2025 with the 'Mini Plus' upgrade, promising even more advanced tracking capabilities.
App and User Experience
The Fi Mini app is described as smart and feature-rich, with comprehensive location tracking, activity and sleep insights, and a polished interface. PCMag's Tyler Hayes noted that the app is well-designed and provides a good user experience, though he mentioned that the AI health insights still feel like a work in progress. Wired's Molly Higgins found the app easy to use and appreciated the ability to view daily stats without needing a wearable screen. However, Trustpilot reviewers have expressed mixed opinions about the app experience. Some users praised its ease of use and cool functions, while others found the app to be confusing or frustrating, with one reviewer noting that the app changes don't work properly. The app requires the phone to be open to function, which can be a limitation. Additionally, some users have complained about the subscription fees, with one reviewer stating that the fee is 'too high' and that they have 'no way of disabling the social media stuff which I hate.' The app also includes features like geofencing and escape alerts, which are essential for pet safety and peace of mind.
Value and Subscription Costs
The Fi Mini is priced at $189 for the hardware plus a 12-month cellular subscription, with monthly plans costing $4.40 per week or $19 per month. PCMag's Tyler Hayes noted that prepaying for longer periods offers savings, with 6-month plans billed at $99 twice a year, one-year plans at $189 annually, or two-year plans at $339 biennially. Fi also runs deep discounts nearly year-round, with offers of $35, $50, and $70 off depending on the plan chosen. The subscription includes cellular connectivity, which enables live GPS tracking in Lost Mode, as well as activity and sleep monitoring, 24/7 support, and unlimited replacements of the Mini if it's damaged. However, Trustpilot reviewers have criticized the subscription costs, with one reviewer stating that the fee is 'too high' and another noting that they had issues with billing and promotions. The company offers a 30-day trial and a one-year warranty, which should alleviate concerns about Verizon service availability or sizing. For comparison, the Tractive Dog 6 costs $79 for the hardware plus $10 per month for service, making the Fi Mini more expensive but with more features.
Escape alerts triggered falsely three times
Despite its many strengths, the Fi Mini has several notable shortcomings. The most significant issue is inconsistent battery performance, with some users reporting frequent charging needs and even battery failures within days. Trustpilot reviewers have noted that the GPS tracking is often inaccurate, with one user stating that the walking track information is 'very seldom accurate' and sometimes 'WILDLY INACCURATE.' The app's functionality is also limited, as it requires the phone to be open to work properly, and some users have complained about the subscription fees and lack of flexibility in disabling social media features. Additionally, the escape alerts are not always reliable, with Wired's Molly Higgins reporting that she was mistakenly alerted three times during testing. The device's size may also be too large for very small pets, and the Fi Base, while helpful, adds an extra cost that not all users may find necessary. Some users have also criticized the customer service, with one reviewer stating that they were told the collars were 'working' even after they broke down, and another noting that responses were slow and refunds were denied despite product failures.
Suited to small cats and indoor wanderers
The Fi Mini is best suited for pet owners with small to medium-sized cats and dogs who value reliable GPS tracking, activity monitoring, and peace of mind. It's particularly useful for indoor cats or dogs who may wander into unsafe areas, as the geofencing and escape alerts provide immediate notification. PCMag's Tyler Hayes found the device ideal for small and medium-size pets, with the lightweight design ensuring minimal discomfort. The Fi Mini is also a good choice for pet owners who want comprehensive health insights and are willing to pay for a subscription service. However, it may not be ideal for owners of very small pets, as the device might be too large for some. Additionally, users who are concerned about battery life or who prefer more affordable options might find the Fi Mini's subscription costs and occasional inaccuracies to be deal-breakers. For those who prioritize long battery life, ease of use, and accurate tracking, the Fi Mini is a strong contender in the smart pet collar market. The device is also recommended for pet owners who live in areas with good cellular coverage and want to take advantage of the Fi Base for extended battery life and improved accuracy.
Strengths
- +Does not bother pets wearing it on their collars
- +Offers good battery life with minimal maintenance required
- +Provides reliable GPS tracking with real-time location updates
- +Works well for indoor cats that occasionally escape
Watch-outs
- −Limited to basic tracking features without advanced analytics
- −Requires app setup and ongoing smartphone connectivity for full functionality
How it compares
The Fi Mini excels in unobtrusiveness and long battery life compared to the Tractive Dog 6 and Tractive Dog 6 Smart Dog Tracker, which both require subscriptions and offer more advanced features. Unlike the more feature-rich Fi Series 3+, it lacks activity monitoring and sleep tracking, making it a simpler but less comprehensive option for indoor cats.
Rating sources
“Built for cats and small dogs, Fi Mini monitors live GPS, escape alerts, and daily activity tracking so you always know what your pet is up to.”
Our 3.9 score is the average of these published ratings. Ratings marked * were derived from the reviewer’s written analysis or video transcript — the publisher didn’t print an explicit numeric score, so we inferred one from their own words. Click through to verify. More about methodology.
