GulfData does not provide eSIM plans for Guinea‑Bissau that include a phone number or SMS capability. All GulfData offerings for the country are data‑only plans.
Travelers who need voice or messaging can use common VoIP applications such as WhatsApp, Telegram, or iMessage over the data connection, but the availability of those services can vary in Guinea‑Bissau, so it is advisable to confirm that the apps they rely on will work before buying a plan.