Samsung Galaxy Watch8 40mm vs Apple Watch Ultra 3 49mm

32GB

64GB

2GB

6.0

Subject to change based on future operating system updates.

26

Subject to change based on future operating system updates

Yes

Ask Siri to set a reminder, send an invitation, or give you directions, all without your phone.

Bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 34, 38, 39, 40, 41, 66, 71

Bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 18, 19, 20, 25, 26, 28, 38, 39, 40, 41, 53, 66, 71

850, 900, 1900, 2100, 1700/2100

850, 1700/2100, 1900, 2100MHz

Yes

Yes

Yes

Required to use smartwatch over cellular; rate plan required

Wi-Fi 4 (802.11n)

Wi-Fi 4 (802.11n)

2.4GHz & 5GHz

Open, Secure

v5.3 + EDR, A2DP, HS, LE, aptX®

v5.3

Yes

eSim

Electronic SIM

Yes

Bands n1, n2, n3, n5, n7, n8, n12, n14, n20, n25, n26, n28, n38, n40, n41, n53, n66, n71

Accelerometer, Ambient light, Barometer, Gyroscope, Heart rate, Bioelectrical impedance analysis, Geomagnetic, Infrared temperature

Electrical heart sensor

Third-generation optical heart sensor

Blood oxygen sensor

Temperature sensor

Depth gauge

Water temperature sensor

Compass

Always-on altimeter

High-g accelerometer

High dynamic range gyroscope

Ambient light sensor

Yes

Insert pictures, video clips and sound clips easily (messaging charges apply)

Yes

Outlook

Music

Apple Music®

MP3, M4A, 3GA, AAC, OGG, OGA, WAV, AMR, AWB

Yes

This device is not hearing aid compatible.

The AT&T Eco-Rating 2.0 system gives you environmental and social details about this device. The system uses a total of 20 performance criteria across 5 different attributes, for a total rating of 1 to 5 stars: 19-20 (5-star), 16-18 (4-star), 13-15 (3-star), 10-12 (2-star), 8-9 (1-star)

4/4

3/3

1/1

2/2

10/10

20/20 (5-star) Please visit www.att.com/ecospace for additional information

Improved Workout app with new metrics, new views, and advanced ways to train.

Siren, Backtrack, Fall Detection, Emergency SOS and Crash Detection.

Set workout-specific goals, see full summaries when you're done, and track how you're trending over time.

Generates an ECG similar to a single-lead electrocardiogram.

Keep tabs on your resting, walking, and workout recovery heart rate.