Esimify does not offer a Guam eSIM that includes a phone number or SMS capability. Only data‑only plans are available from Esimify for Guam. Travelers can still use popular VoIP applications such as WhatsApp, Telegram, and iMessage over the data connection to make calls and send messages, but this is not guaranteed in every circumstance. Some destinations may block or limit access to specific apps or VoIP services, so users should verify that the services they rely on work in Guam before purchasing a data plan.