ByteSIM does not provide any eSIM plans that include a phone number or SMS capability for San Marino. The only plans available from ByteSIM for this destination are data‑only, which allow internet usage but do not support voice calls or text messages. Travelers who need voice or messaging can use VoIP applications such as WhatsApp, Telegram, or iMessage over the data connection; however, some destinations may restrict access to these services, so it is advisable to confirm that the apps required are accessible in San Marino before purchasing a ByteSIM plan.