
Garmin
$499.99

Fi
RedDB rating based on Reddit opinions
Reddit score
RedDB's algorithmic rating based only on relevant Reddit opinions.
It uses one opinion per author: their highest-upvoted mention.
Evidence volume, recency, and votes affect the result.
The opinion count and sentiment bar include all analyzed relevant opinions; the bar does not represent the score out of 100.
$129.00
We may earn a small commission.
Sentiment summary across the product areas Reddit users mention most.
Original Reddit posts and comments behind this analysis.
The reason they cost a subscription is because they use cellular to transmit the gps location to your phone. That costs money. There are only 2 on the market that are true LTE/GPS collars, the HALO4 collar, and the Fi series 3/3+. I have a fi series 3, and with an escape artist dog, its worth it, ot
...chubbysumo in r/dogs
July 27, 2025 at 1:30 PM
25
We returned it for those reasons. Can’t use Fi app without cell service, thus can’t find dog if no cell service. We tried it on a hike through light/moderate tree cover and it did not work. Other gps devices (a Fitbit with standalone gps and also iPhone using satellite messaging) did work in the loc
...EnvironmentalFly6800 in r/FiDogCollar
August 4, 2026 at 1:04 AM
5
See my post on 3+ vs 3 battery lifehttps://www.reddit.com/r/FiDogCollar/s/W3jrCtZ04A Also, I think Bluetooth to phone or base is the most efficient.
wibzoo in r/FiDogCollar
June 12, 2026 at 4:58 PM
3
I used to work in a parallel industry. (Software for vet clinics) about 5 years ago, including running the companies referral marketing program. At the time there were two main companies doing cellular connected collars. On paper, the “fi” dog collar was more impressive than the other one.
AdmirableIsopod3270 in r/vizsla
May 9, 2026 at 11:43 AM
2
I think it’s important to give them good food and plenty of walks. It is easy for them to get lazy (mine can be stubborn getting out of bed or off the couch). I’ve also had a Fi dog collar on mine for nearly his entire life and it counts his steps and tells me how long it’s been since he’s last gone
...Active-Praline3130 in r/shiba
May 17, 2026 at 3:02 PM
2
“Fi” dog collar. If not for the Fi collar I would have lost my dog when she escaped a broken gate while I was out. The collar alerted me she left the safe zone so I could head home. She managed to get about a mile away and someone picked her up and took her inside. The cellular modem & GPS in the co
...MoarSocks in r/AskReddit
May 21, 2026 at 8:05 AM
2
Hide a fully charged fi dog collar in your car when you overnight at a hotel. All you need is the metal piece. It works amazing. You do have to keep it charged though.
Organic_Agent9985 in r/Corvette
August 9, 2026 at 12:16 AM
1
Fi’s claim to fame is battery life and size. Everything else is marketing fluff. The accuracy of the 3+ is good enough and it’ll get you within 15-20 feet of where the collar is on lost dog mode. It doesn’t provide up to the second location data because that’ll run the battery dry. It’s the best for
...CricktyDickty in r/FiDogCollar
June 12, 2026 at 5:54 PM
1
What updates or additional features do you want? I personally hate it when companies have a good thing going and insist on adding stuff just to increase price because of the new stuff. Fi is a dog collar. I need it to let me know if she gets out, and tell me where she is. That’s it. Anything else is
...therealcmj in r/FiDogCollar
June 13, 2026 at 1:07 AM
1
I had a 2 for years for both my dogs, no problems, great battery life. Replaced it about 2 years ago for same reasons you cited. The 3 battery didn't last nearly as long. 2 weeks max. If just on GPS, 2 days. I boarded my dog and didn't use their Wi-Fi (forgot). End of 2nd day, it died. A recent coll
...DogMomPhoebe619 in r/FiDogCollar
June 17, 2026 at 11:42 PM
1

Garmin
$499.99

Dogtra
$429.99

Fi
$129.00