Yes. The Samsung Galaxy Watch Ultra pairs with non-Samsung Android phones running Android 11 or later. Samsung’s UK guidance also specifies at least 2 GB of memory; its U.S. support page does not state a RAM minimum for the Ultra. Most notifications, calls, and core health and fitness tracking work across Android brands, but Samsung Health Monitor features such as ECG, irregular heart rhythm notifications, and sleep apnea detection are restricted to Samsung phones.
What you need to connect the Galaxy Watch Ultra
- Android version: Samsung’s U.S. support page and UK guidance both list Android 11 or later as the minimum. Samsung notes that compatibility may also depend on the phone model, market, carrier, brand, and available software. Samsung U.S. compatibility guidance · Samsung UK compatibility guidance
- Memory: Samsung UK specifies 2 GB of memory for the Ultra. The U.S. page does not publish a RAM threshold for this model, so do not treat the UK figure as a universally stated requirement.
- Setup: Install Galaxy Wearable from Google Play and keep the phone’s software current, as Samsung recommends. Check that the app is available for your exact handset and region.
Samsung’s documentation does not promise that every function behaves identically on every Android phone. Manufacturer-specific apps and software can affect integrations.
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Which features work with another Android brand?
Samsung lists these features as compatible with Samsung and other Android phones:
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- Calls, call logs, and contacts
- Samsung Health functions including steps, activity and exercise tracking, heart rate, body composition, sleep, stress, blood oxygen (SpO2), advanced running metrics, VO2 max, cycle tracking, personalized heart-rate zones, and Energy Score
- Play Store watch faces and apps
- Samsung Wallet payments, subject to country, bank, and handset availability
Compatibility with the watch does not guarantee that a phone’s own apps or manufacturer features will integrate in the same way. Samsung specifically identifies some phone connections and sync functions as limited or Samsung-only.
#1 Best Overall
- 47mm - 1.5" Super AMOLED, 480x480px, 590mAh Battery, MIL-STD 810H certified, IP68/10ATM 100m water resistant, ECG certified
- 64GB, 2GB RAM, Exynos W1000 (3nm), Penta-core, Mali-G68 GPU, Android Wear OS 5, One UI Watch 8 with AI Assistant
- Unlock your full potential with Galaxy AI: Track and improve your fitness performance, monitor heart health with precision, get personalized wellness tips, optimize your sleep for better health, stay connected with smart replies, and enjoy music or podcasts on the go—all from your Galaxy Watch.
- Compatible with Android devices Only. Supports Google Pay. 3G: 850/900/1700/2100/1900/2100MHz, 4G LTE: 1/2/3/4/5/7/8/12/13/18/19/20/25/26/28/40/66/71 - eSIM.
- International Model - No Warranty. 100% Unlocked but Most US carriers may not allow International models. Will still work as Bluetooth Watch. Works outside US with all carriers. (Country selection may not be available during setup. Select Any, as Country will updated later after Connecting to WIFI in Settings.)
What requires a Samsung phone?
Samsung’s U.S. compatibility table restricts Samsung Health Monitor ECG, irregular heart rhythm notifications (IHRN), and sleep apnea features to Samsung phones. Samsung UK likewise says Health Monitor is available only on Galaxy devices, and identifies ECG and blood-pressure features as requiring it. If one of these measurements is a main reason for buying the Ultra, a non-Samsung phone is a significant limitation under Samsung’s published support rules. Samsung U.S. compatibility guidance · Samsung UK compatibility guidance
Samsung’s U.S. announcement on March 31, 2026 says its blood-pressure feature requires a Galaxy Watch paired with a Samsung Galaxy smartphone to use Samsung Health Monitor. It also requires a separately sold upper-arm cuff for initial calibration and recalibration every 28 days, and availability is restricted by country and region. The cuff does not make blood-pressure monitoring work with a non-Samsung phone. Samsung says the feature is not intended to diagnose disease. Samsung Newsroom U.S. announcement
Rank #2
- YOUR TRAIL GUIDE ON YOUR WRIST: Navigate challenging trails on your run with path, elevation and pace guidance on your Galaxy Watch Ultra2¹. The smart watch gives you personalized hydration alerts² along the way so you can run and feel your best.
- ONE PERSONALIZED SCORE TO KNOW YOUR HEART BETTER: Get an easy-to-understand view of your overall heart health³ with a single personalized score⁴ and guidance, so you can avoid the guesswork.
- INSTANT AI ASSISTANCE. NO SLOWING DOWN: Every second can be crucial when you're outdoors. With Galaxy Watch Ultra2, you can just raise your wrist, start talking naturally and get instant AI assistance⁵—no wake phrase needed, no slowing down.
- GREAT DURABILITY FOR THE GREAT OUTDOORS: From rugged trails to under water, take this fitness watch anywhere as your dependable adventure partner. IP69K and 10ATM rated, it’s dust-tight⁶ and water resistant⁷ up to 100m so you can take on any challenge.
- YOUR BODY SPEAKS. LISTEN WITH VITALS: Understand your body better with Vitals⁹–it’s built to track 5 different health metrics while you sleep, catch shifts from your usual patterns, and also provide tailored guidance based on the insights.⁸
Samsung-specific phone integrations and sync limits
Even when the watch pairs successfully, some conveniences depend on using a Galaxy phone:
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- Reminders: Samsung lists reminders as Samsung-phone-only.
- Calendar: Phone calendar notifications are Samsung-only, though Google Calendar sync works with either Android brand.
- Samsung Music: Music transfer is Samsung-only.
- Alarm: You can use the alarm on the watch with another Android phone, but it will not sync with that phone.
These are phone integration differences, not a general pairing failure. The watch’s own compatible functions remain available according to Samsung’s compatibility information.
Rank #3
- 47mm - 1.5" Super AMOLED, 480x480px, 590mAh Battery, MIL-STD 810H certified, IP68/10ATM 100m water resistant, ECG certified
- 64GB, 2GB RAM, Exynos W1000 (3nm), Penta-core, Mali-G68 GPU, Android Wear OS 5, One UI Watch 8 with AI Assistant
- Unlock your full potential with Galaxy AI: Track and improve your fitness performance, monitor heart health with precision, get personalized wellness tips, optimize your sleep for better health, stay connected with smart replies, and enjoy music or podcasts on the go—all from your Galaxy Watch.
- Compatible with Android devices Only. Supports Google Pay. 3G: 850/900/1700/2100/1900/2100MHz, 4G LTE: 1/2/3/4/5/7/8/12/13/18/19/20/25/26/28/40/66/71 - eSIM.
- International Model - No Warranty. 100% Unlocked but Most US carriers may not allow International models. Will still work as Bluetooth Watch. Works outside US with all carriers. (Country selection may not be available during setup. Select Any, as Country will updated later after Connecting to WIFI in Settings.)
Does the Galaxy Watch Ultra work with an iPhone?
No. Samsung says the Galaxy Watch Ultra is not compatible with iPhones. Samsung attributes this to newer Galaxy watches relying on Google Play services, which iOS does not support. Samsung U.S. compatibility guidance
Quick Recap
Rank #4
- WHY GALAXY WATCH ULTRA: Longest-lasting battery yet.¹* Advanced health and sleep tracking features.* Personalized Running Coach.* Durable titanium casing.* 10ATM Water Resistance.⁹* Dual-frequency GPS.* Personal AI assistant for hands free help.⁶*
- A BATTERY BUILT FOR ENDURANCE: Have the confidence to adventure off-grid with a battery that can keep up with you. Galaxy Watch Ultra features our longest-lasting battery yet,¹ so you can go to the extreme for days on end without needing to recharge.
- YOUR ADVENTURE STARTS THE NIGHT BEFORE: Fuel tomorrow’s performance with a great night’s sleep, thanks to Advanced Sleep Coaching² - now improved with even more ways to help you sleep smarter.
- BUILT FOR THE LONG RUN: Whether you’re on a trail or a track, unleash the winning runner within using Running Coach³ on Galaxy Watch Ultra. It analyzes factors⁴ such as your age, weight, oxygen levels and heart rate to guide you through your run.
- UPDATES THAT GIVE YOU THE EDGE: Navigate the wild more easily with Now Bar⁵ and an improved user experience. Now Bar conveniently puts the info you use the most - like weather, timers, directions and more - right on your main Watch screen.
Check these points before pairing
- Confirm the phone runs Android 11 or later.
- If you are relying on the UK-published specification, confirm the phone has at least 2 GB of memory; Samsung’s U.S. page does not state this minimum.
- Check Google Play for Galaxy Wearable availability on your exact handset, then install it and update the phone software.
- Decide whether you need ECG, IHRN, sleep apnea, or blood-pressure features. Samsung’s published Health Monitor requirements make a Samsung Galaxy phone necessary for those features.
- Check country and carrier availability and whether the Samsung-specific integrations you use—such as Camera Controller, Find, reminders, or music transfer—are important to you.
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