Compare Garmin Fenix 8 vs Samsung Galaxy Watch Ultra (2025)

Reviewers liked auto-start style behavior where it existed, especially dive triggering and ski ascent/descent detection, though it was discussed as sport-specific rather than universal.

Workout auto-detection is broadly useful, with reviewers citing automatic workout detection and reliable walk detection, though manual starts remain better for some activities.

The app ecosystem is broad through Garmin and Connect IQ, but reviewers repeatedly noted it still trails Apple and Samsung for full smartwatch app depth.

The app ecosystem is a strength: reviewers mention many available apps, Google Play access, and expanded usefulness from the extra storage.

Bands and straps were generally described as practical, comfortable, and easy to clean, with some reviewers preferring nylon options for better fit.

Band feedback is mostly positive for comfort, stability, and easy removal, though one reviewer noted dirt collecting in the strap holes.

Battery life was one of the strongest points, with reviewers reporting multi-day to multi-week endurance depending on model, display mode, and GPS use.

Battery life is one of the clearest strengths, often described as the best in Samsung’s lineup, though heavy GPS or always-on use can reduce it.

Blood oxygen and SpO2 support were confirmed by multiple reviewers, mostly as part of the broader health-sensor suite rather than a deeply tested standout.

Blood oxygen tracking is present across the health sensor set, but one long-term reviewer found SpO2 readings routinely low.

Bluetooth-related features worked for calls, headphones, straps, and phone-dependent audio, with reviewers generally finding connection support functional.

Bluetooth support is present, including Bluetooth 5.3 mentions, but external sensor connections were criticized or described as unavailable.

Display and flashlight brightness drew praise, especially AMOLED readability, though one reviewer found outdoor glare could require higher brightness.

Brightness earns strong praise, with reviewers citing high nits, bright AMOLED output, and easy readability.

Build quality was consistently viewed as premium and rugged, with reviewers calling out sturdy construction and a tank-like feel.

Build quality is consistently praised through the rugged titanium case, durable chassis, and robust construction.

The five-button setup remains useful for workouts and wet conditions, but the new inductive/leakproof buttons felt different and sometimes less satisfying.

Button controls are mixed: reviewers like the Quick/action button and programmable shortcuts, but one long-term reviewer disliked accidental presses and limited workout button behavior.

Call handling is useful in a pinch, but reviewers often criticized the speaker volume or described phone calls as limited rather than a flagship-grade experience.

Call handling is supported through Bluetooth calling, speaker/mic use, and smartwatch features for calls and texts.

One review directly noted calorie tracking as part of the daily activity metrics, supporting basic usefulness rather than detailed calorie accuracy.

Calorie tracking is included as part of the activity metrics, but the evidence is limited to feature availability rather than deep accuracy testing.

Charging is infrequent because of long battery life, but the proprietary Garmin connector was seen as less convenient than magnetic charging.

Charging is wireless and reasonably convenient, but one reviewer criticized the missing wall charging block.

Charging speed received limited direct attention, with one reviewer saying a full charge takes roughly an hour.

Charging speed gets limited but positive evidence, with one review reporting a full charge in about 95 minutes.

Coaching and training-plan support was viewed positively, including Garmin Coach, daily suggestions, and strength-training programs.

Coaching features are a real addition, especially Running Coach, with reviewers describing personalized plans and guidance.

Comfort was mixed: smaller/lighter configurations and straps were acceptable, but larger Fenix 8 models could feel bulky for continuous wear.

Comfort depends on wrist and expectations: some reviewers found it comfortable, while others felt the weight or bulk.

Garmin Connect was praised as deep, stellar, and useful for reviewing metrics, though some customization still happens on the watch.

The companion app setup is useful but split, with health and smartwatch settings divided between Samsung Health and Galaxy Wearable.

Contactless payments were confirmed as part of Garmin’s fuller smartwatch toolset, though they were not a major focus of the reviews.

Contactless payments are supported through Samsung Wallet or Samsung Pay shortcuts.

Cross-platform use is functional, but reviewers noted differences between Android and iPhone, especially around text replies and Apple restrictions.

Cross-platform compatibility is limited: reviews say it works with Android but not iPhone, with the best experience tied to Samsung phones.

Customization is a clear strength, spanning watch faces, data, glances, settings, Focus modes, and Connect IQ options.

Customization is strong across programmable buttons, widgets, tiles, colors, and watch-face data.

The AMOLED display was widely praised as bright, sharp, vibrant, and easier to use than older or MIP-style displays for many daily scenarios.

Display quality is a major strength, with repeated praise for the large, vibrant AMOLED display.

Durability was a major strength, with reviewers citing sapphire, titanium, rugged construction, scratch resistance, and survival-oriented testing.

Durability is a standout, backed by titanium construction, MIL-STD claims, scratch protection, and reviewer reports of little damage.

ECG support was confirmed through the Elevate sensor, with availability depending on region or approval status.

ECG functionality is widely listed as part of the health feature set, though one review notes Samsung-phone pairing requirements for ECG and blood pressure.

Fit depends heavily on size and strap choice; reviewers liked available sizing but warned that larger cases can be cumbersome on smaller wrists.

Fit is polarizing: it can fit some larger wrists well, but reviewers also note the single 47mm size and large wrist footprint.

Fitness tracking accuracy was generally strong across runs, rides, and workouts, though high-intensity or vibration-heavy efforts could introduce variance.

Fitness tracking accuracy is generally good for everyday and running use, though scientific testing places it below the top alternatives.

GPS accuracy was one of the strongest reviewed attributes, with multiple reviewers describing fast locks, crisp tracks, and highly accurate performance.

GPS accuracy is good in several reviewer tests and supports dual-frequency GPS, but scientific testing found some route deviation.

Health tracking was portrayed as broad and useful, especially through sleep, HR, Body Battery, wellness metrics, and the sensor suite.

Health tracking is feature-rich but mixed in accuracy, with strong sensor coverage offset by questionable antioxidant, HRV, and some sleep-stage findings.

Heart rate accuracy was mostly strong for steady efforts, with mixed results during intervals, climbs, cycling vibration, or longer variable activities.

Heart-rate accuracy is strongest in running evidence, with one reviewer matching a Polar strap closely, while scientific testing calls it good rather than elite.

LTE connectivity was a repeated weakness: standard Fenix 8 reviews noted no cellular/LTE support and wanted it for safety or independent calls.

LTE is a consistent advantage because it is standard or broadly available, though one reviewer notes carrier setup can cost extra.

Mapping and navigation were standout strengths, with praise for offline maps, topo detail, dynamic routing, ClimbPro, and backcountry usefulness.

Navigation support is useful through offline maps, Google Maps routing, and GPS widgets, but one reviewer notes no built-in maps on-watch.

Materials quality was considered premium, especially titanium, sapphire, steel, Gorilla glass, and the general high-end hardware package.

Materials quality is strong, centered on titanium, sapphire/robust design references, and corrosion-resistant claims.

Menu navigation is improved in places but still has a learning curve; some reviewers found it intuitive while others found it overwhelming or laggy.

Menu navigation is mostly straightforward through swipes, app drawers, digital bezel haptics, and simple operation.

Music controls were available during activity and through the interface, although reviewers did not treat them as a headline feature.

Music features are useful for downloaded Spotify, streaming, media tiles, and larger storage for music.

Onboard/offline music support was well supported through Spotify, Amazon Music, YouTube Music, MP3s, and playlist downloads.

Onboard storage is a clear 2025 upgrade, repeatedly described as 64GB and useful for music, apps, and offline maps.

The operating system remains powerful and efficient, but reviewers saw it as less smart and less app-rich than watchOS or Wear OS.

The operating system experience benefits from One UI 8/Wear OS updates, Gemini, Now Bar, and refreshed interface features.

Outdoor visibility was mostly positive for AMOLED and improved solar clarity, but reflective sapphire and glare could make outdoor readability context-dependent.

Outdoor visibility is excellent, with multiple reviewers saying the bright display remains readable in sunlight.

Pairing reliability was directly supported for heart-rate straps and headphones, with one reviewer reporting easy accessory connection.

Pairing and setup reliability are positive where tested, with instant recognition and quick setup noted.

Recovery insights were a strength through Training Readiness, recovery status, Body Battery, HRV, and training-oriented readiness tools.

Recovery-style insights are mixed: vascular load interests some reviewers, while HRV and related metrics draw skepticism.

Reliability improved after updates and was tied to premium build quality, but early bugs and lag kept it from being flawless.

Reliability is mostly acceptable but not flawless, with one review noting brief display interruptions and another calling performance not horrible rather than perfect.

Safety features were valued through course alerts, dive safety information, flashlight use, and backcountry routing, though missing LTE limited safety potential.

Safety features include fall detection, emergency siren references, sleep apnea alerts, and related health/safety setup options.

Size options were a strength overall, with 43mm, 47mm, and 51mm AMOLED choices, though solar and LTE-related options skewed larger.

Size options are limited by the single large 47mm format, though the band can fit a range of wrists and the screen size appeals to some users.

Sleep tracking was generally positive for sleep/wake detection and detailed sleep feedback, while sleep-stage accuracy was treated more cautiously.

Sleep tracking is useful and improving, but reviewers disagree on sleep stages and awake-time accuracy.

Smartphone notifications are supported and redesigned, with reviewers noting phone notifications, optional notification center behavior, and reply workarounds.

Smartphone notifications are well supported, with reviewers noting detailed notification views and suggested replies.

Smartwatch features improved with mic, speaker, calls, voice, notifications, music, Messenger, and payments, but remained less complete than Apple/Samsung.

Smartwatch features are broad, including LTE, calls, texts, Gemini, Now Bar, storage, and Samsung’s full watch software stack.

Software smoothness was mixed: some reviews saw fast layouts or post-update improvement, while others reported lag, bugs, and not-yet-smooth UI behavior.

Software smoothness is generally good, with smooth app launches and more functional One UI behavior, despite occasional reliability caveats.

Step tracking was directly supported as a basic metric, though the reviews did not deeply benchmark step-count accuracy.

Step counting is positive in basic walking tests, but one reviewer notes accuracy drops when arms are not swinging.

Stress tracking was repeatedly included among the health and wellness metrics, but it was not deeply validated by reviewers.

Stress tracking is included in Samsung’s health sensor set, though the reviews provide feature evidence more than accuracy testing.

Style and design were mixed-positive: some liked the premium rugged look, while others found it more tool-like than elegant.

Style is divisive: some reviewers like the rugged, colorful, stylish look, while others find it bulky or not pretty.

Third-party app support is mixed: Connect IQ and glances are useful, but Garmin’s broader third-party app story trails Apple and Samsung.

Third-party app support is solid through Google Play, fitness apps such as Strava and Map My Run, and a growing Wear OS app selection.

Touchscreen responsiveness ranged from bright and responsive AMOLED praise to complaints about taps needing repeated attempts on some models.

Touchscreen responsiveness and gesture operation are described as intentional and straightforward in the long-term review evidence.

The user interface was modernized and sometimes more logical, but reviewers were split on whether the redesign improved real everyday use.

The user interface is improved and functional, though some reviewers dislike parts of the visual layout.

Value for money was the main concern, with reviewers praising capability but repeatedly questioning the high price and upgrade justification.

Value for money is the main weak point because reviewers repeatedly question the high price and minimal 2025 hardware changes.

Voice assistant and voice commands were useful for timers, activities, and offline commands, though hands-free limitations and phone dependence reduced appeal.

Voice assistant quality is a strength with Gemini, which reviewers describe as convenient, useful, and directly available on the wrist.

Watch face quality and customization were strong overall, with more faces, Connect IQ options, and improved face customization.

Watch faces are a strength, with reviewers praising quantity, customization, and Samsung’s polished face designs.

Water resistance and dive support were major upgrades, with 100m water resistance and recreational dive functionality down to 40m.

Water resistance is a strong feature, with reviews citing 5ATM/10ATM ratings, IP68 claims, and pool/rain/snow use.

Wellness insights were broad and useful through Morning Report, Body Battery, sleep, stress, health scores, and Garmin’s daily guidance.

Wellness insights are useful but uneven: sleep coaching and vascular load get interest, while energy score and antioxidant index receive skepticism.

Wi-Fi was lightly covered; reviewers mentioned phone Wi-Fi setup convenience and offline navigation without relying on data or Wi-Fi.

Wi-Fi support is present across connectivity mentions, including LTE/Wi-Fi model references.

Workout tracking variety was exceptional, spanning 80 activity modes, running, cycling, swimming, diving, hiking, gym, and niche sport profiles.

Workout variety is strong, with reviewers citing many tracked activities, multisport/triathlon capability, and broad exercise lists.