Amazfit T-Rex 3 Pro (44 mm): problems, parts and running costs
Checked: 2026-10-17
Summary
The hardware earns strong reviews, but navigation and routing software is the recurring functional problem, with route guidance failing in most attempts reported by WIRED. Running costs are essentially the watch itself plus an optional subscription, and it is a strong buy at $350 or less.
Common problems and fixes
- Workout software freezes — a Zepp Coach run froze with a “Training Completed” trophy one mile in; a restart is the only reported workaround. [3]
- Voice announcements cannot be turned off — Wareable reports the workout start and end announcements cannot be disabled, unlike on the T-Rex 3. [4]
- Zepp Flow responds slowly — WIRED measured response times of up to 8 seconds or no response. [3]
- Zepp Pay does not work in the US — confirmed by WIRED and Wareable; plan to use another payment method. [3][4]
- Stock strap fit is tight — at least one owner reported the band barely fit and required buying a larger one. [6]
- Music transfer fails — one owner reported repeated MP3 download failures that worked on a previous Amazfit watch. [6]
- No third-party app ecosystem — Zepp OS 5 has no Google Play or Wear OS apps, the most common structural complaint. [1][2]
Parts and consumables
Yearly running cost
Core features need no subscription. The only recurring cost reported is the Aura Wellness Advisor add-on for in-depth sleep reports, assessment and relaxation tools, which requires a monthly or annual payment; the price was not stated, so a yearly total cannot be computed. [1]
When it is a good buy
Amazfit launched the T-Rex 3 Pro at $399.99 in September 2025, with TechAdvisor’s review carrying a $379 price and REI listing it at $400.00. At $350 or less it is a strong buy for outdoor use, $351-399 is fair, and above $400 is weak. [4][11][9]