Activate LTE service for your Samsung Galaxy Watch
For the LTE Samsung smart watches to receive calls and messages without a phone, mobile data service must be activated for the watch first.
SAMSUNG Galaxy Watch 5 Pro (45mm,WIFI + 4G LTE) 1.4'' Super AMOLED Smartwatch GPS Bluetooth with Sleep Coaching,Bioactive Sensor,Water Resistant R925U (Fast Charger Bundle,Black Titanium) (Renewed) : Electronics
Samsung Galaxy Watch 6 / Watch 5 Pro / Watch 4 - How to Activate LTE Services ?
Manage the Quick panel on your Samsung smart watch
Galaxy Watch, Wearables Support
Galaxy Watch5 Bluetooth (40mm)
Samsung Galaxy Watch - Activate / Set Up Device
Problems with call and text messages on your Samsung smart watch
Samsung Galaxy Watch - Activate / Set Up Device
Galaxy Watch4 Classic LTE (42mm) Stainless Steel
Best Galaxy Watch Deals: Save Up to $81 on Watch 6 Series, Up to $198 on Watch 5 Series - CNET