Best for Fitness
Watch Ultra 3
Why it wins
- Strong standalone experience for workouts
- Premium build for active use
- Top-tier Apple integration
Top Pick
Why it wins
- Great Android companion
- eSIM activation supported
- Solid fitness + daily smartwatch balance
Forerunner® 945 LTE
Why it wins
- Elite training metrics + GPS
- LTE for live tracking/safety features
Garmin LTE is not standard carrier eSIM. The watch cannot make/receive phone calls or handle normal smart notifications over LTE.
Best for Everyday Use
Top Pick
Why it wins
- Best overall iPhone smartwatch experience
- Great apps + notifications
- LTE option for leaving phone behind
Top Pick
Why it wins
- Clean Wear OS experience
- Strong Google/Fitbit integration
- LTE model available
Top Pick
Why it wins
- Balanced features for daily use
- Wide Android compatibility
- eSIM support on LTE variants
Best for iPhone
Top Pick
Why it wins
- Best iOS integration
- LTE option widely supported
- Strong health + daily features
Watch Ultra 3
Why it wins
- Rugged + premium
- Best battery tier in Apple lineup
- Great for outdoor and sport-heavy users
Best for Android
Top Pick
Why it wins
- Best Google services integration
- Fitbit health layer
- LTE version available
Top Pick
Why it wins
- Feature-rich Wear OS option
- eSIM activation via Galaxy Wearable
- Great everyday usability
Best Budget Option
Top Pick
Why it wins
- Lowest-cost entry into Apple eSIM/LTE
- Strong basics + safety features
- Good for first-time smartwatch buyers
Galaxy Watch Ultra
Why it wins
- Often heavily discounted
- Still supports eSIM on LTE variants (carrier/region dependent)
Exact model recommendation depends on current pricing and carrier support in your country.
Best Battery Life
fēnix® 8 – 51 mm, AMOLED
Why it wins
- Much longer battery than typical LTE smartwatches
- Connected features aimed at off-grid / outdoor use
Connectivity is LTE-M + satellite/InReach-style services; not classic carrier eSIM phone replacement.
Top Pick
Why it wins
- Notable battery improvements for Wear OS
- Good balance for LTE daily use
Watch Ultra 3
Why it wins
- Best battery tier among Apple Watches
- Strong for long workouts + outdoor use
Best for Health Monitoring
Top Pick
Why it wins
- Apple positions it as a top health watch
- Great ecosystem + health features
- LTE option for staying connected
Top Pick
Why it wins
- Strong Fitbit-based health stack
- Good daily health + sleep features
- LTE model available
Forerunner® 945 LTE
Why it wins
- Excellent training/fitness health metrics
- LTE safety + live tracking features
Not a carrier eSIM phone replacement (no normal calls/SMS/standard smart notifications over LTE).
Compare All Models
Brand | Model | Ecosystem | Connectivity | Key Pros |
|---|---|---|---|---|
| Apple | Watch Ultra 3 | iPhone | Carrier eSIM | Best battery tier among Apple Watches |
| Android | Carrier eSIM | Strong Fitbit-based health stack | ||
| Garmin | Forerunner® 945 LTE | iPhone + Android | Garmin LTE | Excellent training/fitness health metrics |
| Samsung | Galaxy Watch Ultra | Android | Carrier eSIM | Often heavily discounted |
| Garmin | fēnix® 8 – 51 mm, AMOLED | iPhone + Android | Garmin LTE | Much longer battery than typical LTE smartwatches |
eSIM vs. LTE vs. Bluetooth
Bluetooth/GPS
Standard smartwatch. Must be within ~30ft of phone for calls/data.
LTE / Cellular
Built-in radio connects to cell towers directly. Works stand-alone.
eSIM
"Embedded SIM". Digital chip you activate via software. No plastic card.
Apple Watch Cellular vs. Garmin LTE
True "Wrist Phone"
Apple, Samsung, Google
- Share main phone number
- Make/Receive any call
- Stream music & Maps
- Heavy battery drain
Safety & Tracking
Garmin LTE
- LiveTrack & Emergency Alerts
- Spectator Messaging
- Low power (LTE-M)
- NO standard calls/texts
Buyers Guide: Avoid Common Mistakes
- !Don't buy a US model for use in Europe (LTE bands differ).
- !Check if your carrier allows smartwatch eSIM on prepaid plans (often post-paid only).
- !Don't expect Garmin LTE to replace your phone for voice calls.
- !Remember the monthly carrier fee (usually $5-$10/mo).
- !International roaming rarely works on wearables.
- !You can't upgrade a GPS-only watch to LTE later (hardware is missing).
- !LTE drains battery 3-4x faster than Bluetooth.
- !Family Setup (Apple) requires a specific carrier plan.
Frequently Asked Questions
Do Garmin watches have eSIM?
Most Garmin watches do NOT have standard eSIM for calls and texts. Some models, like the Forerunner 945 LTE, have LTE safety features (Assistance Plus, LiveTrack) requiring a subscription, but they cannot make standard phone calls or send SMS like an Apple Watch.
Can I use one eSIM for both phone and watch?
Typically, you use NumberShare (or Digits/NumberSync) which links your watch's eSIM to your phone number. You don't physically swap one eSIM; the carrier provisions a secondary eSIM profile for the watch that shares your main number.
Do LTE watches work without my phone nearby?
Yes. If activated with a carrier plan, LTE watches can make calls, stream music, and use maps without your phone. However, battery life is significantly reduced when using LTE exclusively.
Do I need an extra plan?
Yes, carriers usually charge a monthly fee (often $5-$10) for a smartwatch data plan to enable LTE features.
Explore Watch Specs by Brand
View detailed specifications, dimensions, and size comparisons for every model in our database.