Yes. While the watch will connect to WiFi, a SIM card is required for device registration and most functions and allow it to work when out and about.
For US customers, Angel Watch™ provides the option to use AT&T GSMA SIM through Red Pocket (USA only) for only $10 +tax per month to month. No contracts. No risk of added charges or overages and even free calling to 80+ countries. No US provider is compatible for now
International customers can use just about any GSM worldwide 4G network. Visit our Cellular Networks & SIM cards section to learn more.
With a SIM card, the watch will have its own number and data service connecting right to your Angel Watch™ app regardless of location. You'll be able to see your child's location, give them a call, send them a message, and always give them a way to get in touch with you too.
You'll be able to activate your SIM on our Activation Page here (USA only)