ByteSIM does not offer eSIM plans that include a local phone number or SMS capability for travel to Guyana. The provider currently sells only data‑only eSIMs for this destination, so travelers who need a phone number or standard messaging will have to rely on internet‑based applications such as WhatsApp, Telegram or iMessage. While these VoIP services generally work over the data connection, some countries or carriers may block or restrict specific apps, so it is advisable to verify that the applications you depend on are accessible in Guyana before purchasing a ByteSIM eSIM.