JamboSim eSIM Data Plans for Guam

JamboSim does not provide a truly unlimited data eSIM for Guam. The available plans are fixed data bundles that grant 3GB of high‑speed data each day, after which the speed is reduced to about 1 Mbps. For example, the eSIM Guam Unlimited / 3‑Day plan gives 3GB/day for 3 days at $8.99 USD, while the 7‑Day version provides 3GB/day for 7 days at $19.99 USD. These bundles are the largest data options JamboSim offers for Guam, but they are not unlimited and will throttle once the daily 3GB limit is reached.

JamboSim does not provide a Guam eSIM that includes a phone number or SMS capability. The only eSIM options for Guam from JamboSim are data‑only plans. Travelers who need voice or messaging may use VoIP services such as WhatsApp, Telegram, or iMessage over the data connection, but those apps may be blocked or limited in Guam, so it is advisable to check their availability before purchasing.

JamboSim provides five single‑country data plans for Guam. All of these are daily data cap plans, each offering a fixed 3 GB data allowance that can be used within a validity window ranging from three to thirty days. Prices for these plans fall between $8.99 and $69.99, giving travelers a spread of options from short‑term to more extended usage. Each plan allows tethering, though data speeds may be reduced to 1, 000 kbps after data is consumed. No multi‑country or fixed‑data‑cap plans are available for Guam, so the selection consists exclusively of the five single‑country daily cap offerings.