yaySIM does not provide any eSIM plan for North America that includes a phone number or SMS capability. All plans available from the provider for this region are data‑only and do not support inbound or outbound voice or text messages.
Travelers who need to make calls or send messages can use VoIP applications such as WhatsApp, Telegram, or iMessage over the data connection. However, some destinations may block or restrict access to specific apps or VoIP services, so purchasers should confirm that the apps they rely on are available in North America before buying a plan.