Compare devices

Up to 32GB

64GB

2GB

3.5

11

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 2, 4, 5, 12, 13, 17, 25, 26, 28 and 66

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

HSPA+ with enhanced backhaul

Yes

Yes

Yes

Required to use smartwatch over cellular; rate plan required

802.11n

Wi-Fi 4 (802.11n)

2.4GHz

2.4GHz and 5GHz

v5.0 + A2DP, aptX®

5.3

Yes

eSim

Electronic SIM

850/1700/1900/2100MHz

Yes

Barometer, IMU, Magnetometer, Rotation (Crown)

Electrical heart sensor

Third-generation optical heart sensor

Compass

Always-on altimeter

High-g accelerometer

High dynamic range gyroscope

Ambient light sensor

Depth gauge

Water temperature sensor

Send and receive text messages from your wrist (messaging charges apply).

Yes

YT Music

Apple Music®

FLAC, M4A, MP3, OGG, WMA

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

7/10

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

Track your daily activity on Apple Watch, and see your trends in the Fitness app on iPhone.

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