Fi Tracker Review

UPDATED Sep. 2020
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Fi is a company that practically reinvented the dog collar by infusing it with numerous modern technologies and focusing primarily on equipping it with enough features to allow all dog owners to locate their pets and prevent them from joining more than 100 million dogs that go missing every year.

The project was started in 2017 by Johnathan Bensamoun and Loren Kirkby and quickly raised 10 million dollars from investors like Lerer Hippeau, Freestyle VC, and RRE Ventures. The company is currently headquartered in Brooklyn and invites everybody to stop by for a free Fi tennis ball.

Keep reading this honest Fi tracker review to learn more about the collar and its capabilities and see if it works for your pets.

fi printscreen homepage

How Fi Tracker Works

Fi tracker comes with a GPS module that tracks your dog 24/7 on the new LTE-M network, which allows you to be aware of his or her movement even when taken out by dog walkers and/or caretakers. Fi tracker is famous for its incredible battery life so you can basically put it on and forget about it for months.

It also allows you to create safe zones and receive notifications when your dog exits the perimeter. Since the collar works perfectly fine in all US states, you will receive instant escape notifications anywhere in the country. You can create as many safe zones as you want, which makes traveling with your pet much safer and easier.

Apart from tracking your dog, Fi tracker can help you keep your pet active and healthy by hitting his or her daily, weekly, and monthly step goal, comparing the score with other dogs, and monitoring activity levels when you are not there.

One of the most prominent features offered by Fi pet tracker is the Lost Dog Mode that switches to live location tracking to help you find your pet as quickly as possible. The Lost Dog Mode also activates the red pulsing LED light on the collar, which makes it easier to spot your pet in low visibility conditions or at night. Once your collar enters the Lost Dog Mode, Fi HQ will immediately be notified and the company’s 24/7 lost dog helpline will be at your disposal.

Fi Tracker Design

The Fi collar features a durable and sturdy design with the tracking module being held in place by a tough nylon band. Note that you should not rely solely on Fi tracker as a link to your dog’s leash even though it is able to handle even the most adventurous of pets. The collar is waterproof and can even withstand salt water. Furthermore, it is chew-proof so there should not be any problems in multi-pet households.

The band comes in yellow and gray, but note that the yellow version does not have an XL size. When it comes to Fi sizing, here is your definitive guide:

  • S – Neck <13” 
  • M – 13.5” – 16.5” 
  • L – 16″ – 22.5” 
  • XL – 22″ – 34.5” 

You should be able to fit two fingers between the collar and your dog’s neck for optimal comfort. In other words, the collar should feel snug but not too tight.
fi pet tracker yellow and grey

If the band gets damaged at any given point, you can replace it by simply unlocking the end links and separating it from the module. If the end links get damaged, you can contact the company’s customer support team at Monday to Friday 10 AM – 5 PM EST.

The Fi collar features an LED indicator light. Understanding different modes will help you use the product to its full potential:

  • Solid blue – Fully charged; 
  • Pulsing blue – Charging; 
  • Pulsing red – “Lost Dog” Mode; 
  • Pulsing green – Activated, restarting, reset, the firmware has recently been updated. 

Fi Tracker Technical Specification

This part of our Fi tracker review will focus on the collar’s technical characteristics and implemented technologies.

LTE-M Network

LTE-M is a low-power cellular network specifically designed for IoT devices. It provides dog owners with ultra-long battery life and extended cellular range.


Apart from using GPS and Wi-Fi, the collar can also utilize low-power Bluetooth connection to communicate with other devices like Fitbits, Airpods, and others.

Battery (Lithium-ion – 520mAh)

As we already mentioned in this Fi tracker review, battery life is one of the most impressive features of this collar. Depending on your usage, you can go up to 3 months without recharging the battery. The battery will last up to 2 months if your dog is constantly outside of your home (Wi-Fi & GPS/cellular mixed mode), up to 3 weeks if you are using GPS without Wi-Fi, and up to 2 days in the Lost Dog Mode (with 1-minute refresh).


The Fi collar is extremely resistant to damage caused by outside influences so if you own multiple pets, they will not be able to chew through each other’s collars. Furthermore, your dog will not be able to damage the module or the band no matter how adventurous he or she is.


Unlike many other tracking collars that are only water-resistant, Fi tracker is completely waterproof and can even withstand salt water without any damage or diminished performance. Its waterproof rating is IP-68, which means you can immerse it in up to 1.5m of water without any negative consequences.

fi tracker in the water


The LTE-M network gives you 20-30% more coverage than your regular 3G/LTE networks. This means Fi will be able to track your pet in areas where 3G trackers simply do not work. Fi covers every state in the US

Fi Tracker App

The Fi app will show you your dog’s location in the primary view the moment you open the app. You can scroll the area by swiping across the map or zoom in/out by pinching and pulling your fingers together or apart. This is especially useful while setting up safe zones.

fi pet tracker smart phone app

The app is easy to use, with the first initial representing your current location and the photo of your dog representing where he or she is located. If you are together, the two icons will attach to each other. The app features the “Locator” and “Lost” buttons that point out your current location/where your dog was last recorded and activate the Lost Dog Mode, respectively.

The bottom of the screen is reserved for your dog’s activity and you can always swipe to view past activities. For more in-depth info, simply tap the steps count and toggle between Day, Week, and Month to track your pet’s progress.

Finally, the app allows you to access Fi’s live chat support during the team’s regular business hours.

Fi Tracker Features

Let us now go over some of the most prominent features provided by the Fi tracker and see what sets it apart from other pet tracking devices.

LTE-M Network

Using LTE-M instead or regular 3G/LTE networks enables Fi tracker to provide you with extended range and track your dog’s activity in areas where traditional pet trackers simply do not work.

Durable Design

The Fi collar comes with a tough nylon band that is completely dog-proof and easy to replace. The main module is also chew-proof and built to withstand even the unruliest of pets.

fi tracker on yellow background

User-Friendly Mobile App

Fi tracker comes with its own app that is very easy to use thanks to its intuitive menus and general lack of unnecessary clutter.

Long-Lasting Battery

Thanks to its low-power network and Bluetooth connectivity, Fi tracker can last up to 3 months, depending on usage.


Fi tracker allows you to set up unlimited safe zones across the US, so you will always receive instant notifications the moment your pet leaves the perimeter.

Global Coverage

The Fi collar works in all the states and even covers some rural areas where regular 3G/LTE trackers cannot establish a viable connection.

Fi Coverage

As we already mentioned in this Fi tracker review, the unit works in any state in the US and can even track your dog in some of the rural areas that leave 3G/LTE trackers powerless and useless. However, you still need Internet access in order to view the readings on your Fi app.

How Much Does Fi Tracker Cost?

Fi tracker costs $149 and includes: 

  • Fi module 
  • Fi collar band (additional bands cost $29) 
  • Fi base 
  • USB charging cable 
  • Fi USB power adapter 

After purchasing the Fi tracker, you can also opt for one of the available subscription plans:

  • 1 year – $99 
  • 2 years – $186 
  • 3 years – $248 
fi pet tracker gray in the box

We should note that the collar is basically useless without a subscription since it will stop tracking your dog’s location the moment he or she leaves the Wi-Fi range of the home base. In other words, if you want to unlock GPS tracking, going with one of the subscription plans is a must. The Lost Dog Mode and live agent support are also only available to premium customers.

Once you purchase your Fi collar, you have a 30-day trial period during which you can return it for a full refund. The collar also comes with a full 1-year warranty.

Fi Pros & Cons

Knowing the biggest strenghts and weaknesses of Fi tracker pet tracker can help you decide if it is the right pet tracker for your furry friend. Here is a quick overview of its pros and cons.

  • LTE-M network 
  • Durable chew-proof design 
  • IP-68 waterproof 
  • Bluetooth and Wi-Fi connectivity 
  • GPS tracking 
  • Geo-fencing 
  • Global coverage 
  • Battery life up to 3 months 
  • Budget-friendly  
  • 30-day money-back guarantee 
  • 1-year warranty 


  • Requires a subscription 
  • No 1-month subscription option 

Bottom Line

Fi tracker is a modern pet tracker primarily designed to find lost dogs and monitor their location, activity, and health on a regular basis. It allows you to set up safe zones and receive instant notifications when your pet leaves the predefined perimeter. The home base enables it to utilize Wi-Fi instead of GPS while your dog is in range in order to save battery. Speaking of battery, Fi tracker has one of the most impressive batteries on the market that can last for up to 3 months, depending on usage.

On the other hand, the collar is pretty much useless if you do not purchase one of the available subscription plans. Furthermore, the shortest plan includes a 1-year subscription so you do not have the option of going month-to-month and opting out if you so choose.

Bottom line, Fi tracker is an excellent pet tracker that will monitor your dog’s location and activity pretty much anywhere in the US with the only downside being that you have to purchase a subscription.

User Reviews (15)

Fi Tracker customer rating based on 15 user reviews.

The Fi Tracker reviews listed below reflect the opinions and experiences of real users and are in no way influenced by the company reviewed here. Before publishing each review, our team checks whether it was submitted by an actual user in an effort to prevent false or spammy reviews.

  1. Kevin | July 9, 2020

    I feel the collar is over hyped. The web site is not clear on stating that you must be in an lte coverage area for the gps to work. so if you’re like me and live in a state with lots of mountains, this collar will not work . It’s probably great for the suburbs but not for the backcountry. Support is iffy at best. It has taken 5 days to get an RMA number become you have to go back and forth explaining that not all states have 100% lte covert in the mountains. Very frustrating.

  2. Erin Jackson | June 14, 2020

    The biggest issue with this collar is the speed it takes to alert you that your Houdini dog has left the safe zone. The 60 ft radius is really extended beyond that. It should be smart enough to 1) have less than 60ft and 2) the second it disconnects from the WiFi base send an alert.

    I think most people want a quick alert with the GPS to find their pet. Without the quick alert the dog is in serious danger.

    It would be helpful if the device could go on any collar but the collar is nice. I can’t say I would recommend this until the speed of alerts is nearly immediate. Hopefully Fi improves. Checked out T-Mobile’s pet collar and expect the second gen go out perform the Fi.

  3. rich | June 14, 2020

    This collar worked well for a while. Now, it says my phone is miles from where I am, and has issues updating dogs position. Save your money. Too bad there wasnt a 0 star option.

  4. Martina Schinke | June 8, 2020

    We had the Fi collar for about a year until our dog lost it permanently in the woods. The issue is that it easily falls off due to poor design of the band attachment and clasp. The location tracking is inaccurate in areas with only few cell towers or poor connectivity like in wooded areas, which makes it difficult to find it. We spent many days looking for the collar and found it again a few times before. We first thought we got a defective collar and got two replacements, but the problem is in the design and quality. Also, the device itself had a hairline fracture within a few months of regular use, we did not drop it or step on it. Fi replaced it because it was still under warranty.

  5. Mick | May 21, 2020

    We have two Fis for a labs. Although it loses contact with the base on occasion, overall it is awesome. We spend a lot of time atthe ocean, and the collars have done great. They jump off our boat into the water and swim and the collar works fine with no damage. It’s accurate, and when in lost dog mode, pings the collar often. I recommend this collar for anyone that takes their dogs on adventures, or has concerns of their dog getting lost. Excellent product. The apps works perfect for two dogs, even when the dogs are in different places.

  6. Courtney | May 21, 2020

    Made with flimsy plastic that has broken twice in one year!! When attempting to reach out for help, as I just spent so much money on a dog collar, the company never reached back.

    I have had battery life issues and WiFi/GPS issues but that honestly I could live with because it for the most part was working. But the collar is held together by flimsy plastic that has broken and now the collar just keeps falling off my dog during walks without even being attached to a leash! This product may be great for small dogs but who thinks making a collar with flimsy plastic is ideal for larger dogs? Don’t waste your time and money like I have and use a different product!!

  7. Breanna | April 21, 2020

    I’ve had the collar for about a year now and it’s one of the best purchases for my German Shepard I’ve ever made. We are in all types of environments where the collar gets wet, dirty, etc. and it’s still 100%. The first 2 months we had it, the battery only lasted about a week or so and customer service instantly sent us a new one and it has unbelievable battery life. It’s pretty true to the steps and location but sometimes will search for service while on a hiking trail (usually when my phone with Verizon also doesn’t have much service). I love being about to set goals and see where I need to improve as an owner for my dog’s level of activity. Absolutely amazing. 5 stars.

    • Annette Sullivan | May 1, 2020

      I am confused what cell service does this work with? Does it work well with your Verizon phone?

  8. nathan walloch | April 19, 2020

    does not seem to track the collar at all, did not alert dog was away from home. not happy with this purchase at all

    • gdjoslin | June 19, 2020

      service is slow and terrible. Product not stable. It shows my dog is lost when she is on my property. It also loses Connection a lot.
      They need trained staff who know how to work the device. A 24 to 48 hour delay in getting help. Does not work for me.

  9. Luise Brown Weathers | April 19, 2020

    I am in full agreement with all the other 1 star reviews about this product. All I want to do is return the device for a full refund and all support does is keep telling me it is an easy fix! Today while out for a walk with our dog the collar broke apart, luckily he was wearing a second collar. I want my money back and I want to be finished with Fi.

  10. Janet Ho | April 7, 2020

    Collar sounds good in theory but doesn’t deliver at all. Battery life is nowhere near 2-3 months. More like 2 weeks if you are lucky. Collar’s communication with the base receiver is flawed because we constantly receive incorrect notifications about the whereabouts of our dog, even though she is sleeping right next to us in the house.

    We bought the collar to be able to track our dog in case she got lost. It finally happened and our dog escaped our yard. The worst thing of all about this collar is that the GPS function does not work at all to track our dog! For hours at a time it has not given us updates on our dog’s location, even though it is theoretically still at 51% battery life, and customer assistance is totally useless. They could only repeat back to me exactly what I was already seeing on my app screen and otherwise didn’t help or care at all. Meanwhile our dog is lost and who knows where she could be?

    So what is the point of spending so much money on a collar that doesn’t do anything it advertises? Spend your money elsewhere. If we ever find our lost dog, we will certainly be looking for better alternatives.

  11. Jaclyn | March 8, 2020

    Can I give it zero stars??? While the GPS portion seems to work great itself, the problems lie in the d ring and how the GPS portion attaches to the collar itself. Absolutely terrible design! The collar is appropriately sized for my dog and worn correctly, yet if he gently pulls on his leash or shakes his head to dry off it just falls off!?!? How is this keeping my dog safe!?!? I tried to give the company the benefit of the doubt and reached out and was happy they sent me a replacement however I ended up seriously disappointed when the same thing happened to the second one! I spend over $150 on a collar that is supposed to help keep my dog safe and it comes apart so easily!?!? If it doesn’t stay on my dog it’s literally worthless! Hey Fi fix your collar design!

  12. Megan | February 25, 2020

    Endless GPS issues AND WiFi connectivity issues. Support tries to upsell additional bases (one base should be sufficient for a 1200sqft house). Battery life was good at first but after 6 months has substantially diminished. Skip this collar.

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