Get to know your device Galaxy Watch4

SAMSUNG SM-R870NZGAXAA Galaxy Watch4 Smartwatch fig 1

 Galaxy Watch4 Classic

SAMSUNG SM-R870NZGAXAA Galaxy Watch4 Smartwatch fig 2

Get connected

Download the Galaxy Wearable app to connect your device and smartphone.

Activate your Galaxy Watch

The Galaxy Watch4 Classic (SM-R885U & SM-R895U) and the Galaxy Watch4 (SM-R865U & SM-R875U) are 4G LTE-enabled. Get texts, make and receive calls, even when you leave your phone behind. Consult your service provider for details about activation.

Terms and Conditions

Important legal information
Read this document before operating the mobile device, accessories, or software (defined collectively and individually as the “Product”) and keep it for future reference. This document contains important Terms and Conditions. Electronic acceptance, opening the packaging, use, or retention of the Product constitutes acceptance of these Terms and Conditions.

Arbitration Agreement – This Product is subject to a binding arbitration agree-ment between you and SAMSUNG ELECTRONICS AMERICA, INC. (“Samsung”). You can opt out of the agreement within 30 calendar days of the first consumer purchase by emailing or calling 1-800-SAMSUNG (726-7864) and providing the applicable information.

The full Arbitration Agreement, Standard One-year Limited Warranty, End User License Agreement (EULA), and Health & Safety Information for your device are avail-able online at

If your device required Federal Communications Commission (FCC) approval, you can view the FCC certification on the watch by opening Settings > About watch > Device.

Samsung Knox

For more information about Knox, please refer to:

Specific Absorption Rate (SAR) certification information For information about SAR, visit:

FCC Part 15 Information and Notices

This device complies with part 15 of the FCC Rules. Operation is subject to conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

Emergency calls
Emergency calls may not be possible on all wireless mobile device networks or when certain network services and/or mobile device features are in use. Check with local service providers. If certain features are in use (e.g. call blocking) you may first need to deactivate those features before
you can make an emergency call.

Exposure to Radio Frequency (RF) signals

For information, go to > Health and Safety Information > Exposure to Radio Frequency (RF) signals
For additional Health & Safety information, including Samsung’s Knox security platform, Maintaining Dust & Water Resistance, Navigation, GPS, AGPS, and Wireless Emergency Alerts (WEA), see

Samsung Electronics America, Inc.
85 Challenger Road
Ridgefield Park, New Jersey 07660
Phone: 1-800-SAMSUNG (726-7864)
Use only Samsung-approved charging devices and accessories. Using other accessories may void your warranty and may cause damage.
© 2021 Samsung Electronics America, Inc. Samsung & Samsung Galaxy are registered trademarks of Samsung Electronics Co., Ltd. Other company and product names mentioned herein may be trademarks of their respective owners. Screen images simulated. Appearance of device may vary. Images shown are for reference only. If you use a screen protector, make sure it allows for use of touch-screen features.

Samsung Care+

Get coverage for repairs and 24/7 dedicated support.
To learn more, visit

Documents / Resources

SAMSUNG SM-R870NZGAXAA Galaxy Watch4 Smartwatch [pdf] User Guide
SM-R870NZGAXAA, Galaxy Watch4 Smartwatch, Galaxy Watch4 Classic Smartwatch

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