Apple Watch Ultra 4 49mm vs Sonim XP Pro

64GB

256GB

Up to 2TB

microSD™

8GB

27

Subject to change based on future operating system updates

The next generation of Apple Intelligence is centered around you, integrated into your apps, and built with privacy.

Apple Intelligence powers Siri AI — an entirely new version of Siri that’s more personal, conversational, and powerful, along with helpful features across apps.

Yes

14

Subject to change based on future operating system updates

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

Bands n1, n2, n3, n5, n7, n20, n25, n26, n28, n38, n40, n41, n48, n66, n70, n71, n77, n78

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

Bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 20, 25, 26, 28, 29, 30, 38, 39, 40, 41, 42, 46, 48, 66, 71

Required to use smartwatch over cellular; rate plan required

Wi‑Fi 4 (802.11n)

Wi-Fi 6E (802.11ax)

v5.3

v5.3 + EDR, A2DP, HS, LE, aptX®

Electronic SIM

Nano

n77 C-Band, n77 3.45GHz

850/900/1700/1900/2100MHz

850/900/1800/1900MHz

Quad-band

Yes

Yes

2.4GHz & 5GHz & 6GHz

Open, Secure

Up to 10 devices

Qualcomm Fluence AI

Yes

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

Satellite communications (Emergency SOS, Messages, Find My)

Emergency SOS

International emergency calling

Siren

Flashlight

Fall Detection

Crash Detection

Last Emergency Call Availability Waypoint

Noise monitoring

Backtrack

Generates an ECG similar to a single-lead electrocardiogram.

The most accurate heart rate sensing in a wearable, Series 12 now measures HRV as often as every five minutes for insights on stress and recovery, and takes background heart rate readings every five seconds.

Health Sensing System: third-generation electrical heart sensor, always-on optical heart sensor, blood oxygen sensor, and temperature sensor

Depth gauge

Water temperature sensor

Compass

Always-on altimeter

High-g accelerometer

High dynamic range gyroscope

Ambient light sensor

Accelerometer, Ambient light, Barometer, Compass, Fingerprint, Gyroscope, Proximity

Yes

Yes

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

Gmail™

Apple Music®

YouTube Music

FLAC, MP3, M4A, OGG, AAC, ALAC, AIFF, APE, SBC, LDAC

Via lockscreen, headset

50 MP standard angle lens with ƒ/1.8 aperture

13 MP wide-angle lens with ƒ/2.2 aperture

2 MP micro lens with f/2.4 aperture

1080p @60fps

4K @30fps for H.264/H.265/VP9

16 MP normal lens with ƒ/2.0 aperture

Touch shot, Self timer, Shutter sound

Yes

This device is hearing aid compatible.

Conversational gain with hearing aid: 6.74 db

Conversational gain without hearing aid: 11.82 db

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

1/3

1/1

2/2

9/10