Compare devices

Yes

Required to use smartwatch over cellular; rate plan required

802.11a/b/g/n

802.11b/g/n

2.4GHz & 5.0GHz

2.4GHz and 5GHz

Open, Secure

v5.2 + EDR, A2DP, HS, LE, aptX®

5.3

Yes

eSim

Electronic SIM

HSPA+ with enhanced backhaul

Bands 2, 4, 5 and 12

Bands 1, 2, 3, 4, 5, 7, 12, 13, 17, 18, 19, 25, 26, 39, 40, 41, 66

850/1900MHz

850/1700/1900/2100MHz

Yes

Accelerometer, Ambient light, Barometer, ECG, Geomagnetic, Gyroscope, Heart rate, Infrared temperature

Ambient light, accelerometer, barometric altimeter, built-in GPS, gyroscope, third-generation optical heart rate, electrical heart rate (ECG app),⁸  temperature sensor⁹

Yes

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

Yes

Microsoft Outlook

Samsung Music

Apple Music®

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

Via lockscreen

Yes

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

2/3

1/1

2/2

10/10

Generates an ECG similar to a single-lead electrocardiogram.

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

Siren, Backtrack, Fall Detection,⁶Emergency SOS,⁷ and Crash Detection.

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

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