※ announcement ※
Due to system maintenance, use of the app will be restricted during the period indicated below. We apologize for the inconvenience.
▶Inspection period: 10:00 PM, Friday, October 20, 2023 ~ 0:00 AM, Saturday, November 4, 2023
- Subject to change depending on inspection status
▶During maintenance hours, some customers may not be able to use the setting function.
▶Reason for inspection: System inspection and service stabilization

※ ‘One Number’ is a service that allows you to make calls and messages on your watch using the same number as your mobile phone.

1. How to use
- Install the ‘One Number’ app and follow the registration process.
- Enter the authentication number sent to your watch into your smartphone to complete your registration. (The watch's authentication number will be sent only when the Bluetooth connection between the smartphone and the watch is disconnected.)
※ For some watches, you can install the watch manager app on your smartphone and use the One Number service after pairing your smartphone and watch.

2. Main functions
- One number use ON/OFF setting
- Receiving method settings
- Service termination
- Change connected device
- One number automatic setting change function according to Bluetooth connection/disconnection (provided by Samsung Watch)

3. Available terminals
- Cell phone: Smartphone with Android version 4.0 or higher
- Watch: Galaxy Watch 4, Galaxy Watch Active 2, Galaxy Watch 3, Galaxy Watch, Gear S3, LG Watch Sports, LG Watch Urbane 2

※ LG Watch Urbane (LG-W120L) users can request One Number connection on the watch and register in the One Number menu of the ‘Call Assistant’ app.

4. Precautions
- Both the smartphone and watch must be LG U+.
- The owner of the smartphone and watch must be the same.
- Dual number service and multiple subscriptions are not possible. You can sign up for the One Number service after canceling the service in the ‘Call Assistant’ app.
- Data call charges may apply when downloading/updating apps.

■ Access permission information
[Required access rights]
This permission is essential to use the service.
- Phone: Used to check the version for app updates and to verify the mobile phone number when authenticating.

※If you are using a mobile phone running Android 6.0 or lower, you may not agree to some access rights.
To set access rights, you must upgrade to Android 6.0 or higher. After upgrading, please reinstall the app to reset access rights.