TailSim does not provide United Kingdom eSIM plans that include a phone number or SMS capability. The available UK plans are data‑only, so you will not receive inbound or outbound voice or text service. Travelers who need to make calls or send messages can usually do so via VoIP applications such as WhatsApp, Telegram, or iMessage over the data connection, but because some destinations may restrict access to these apps, users should check that the services they rely on are available in the United Kingdom before purchasing.