Affiliate Disclosure: PickClarity earns commissions from qualifying purchases through our partner links. Our rankings are editorially independent — they are never influenced by affiliate relationships or commission rates. Learn more about our methodology.
#1 in Dog GPS CollarsBest Overall
Fi Series 3+
Fi
$129.00 – $149.00
Fi's current GPS + LTE-M smart collar (launched June 2025) with twice the GPS sensitivity of the Series 3, escape alerts, activity and behavior tracking, and Apple Watch integration. Requires a Fi membership.
9.2
Excellent
Consensus
Don't buy this if…
- Budget for the renewal price, not the intro price: Fi memberships renew at $189/year
- LTE coverage gaps in very rural areas can cause tracking delays
Evidence Ledger
User Reviews5/15/2026
Fi Series 3 User Sentiment Analysis
Analysis of 500+ user reviews from Amazon, Best Buy, and community forums.
Expert Review5/15/2026
Fi Series 3 Expert Review Analysis
Aggregated expert scores from 5+ professional review sites.
Compare Fi Series 3+
Buying Guides
More in Dog GPS Collars
View all →
Fi Series 3+
From $129