Roamless does not provide an unlimited‑data eSIM option for Guam. All of the plans available for Guam are Pay‑as‑you‑go, meaning the listed data amount is the approximate value of the credit purchased rather than a hard ceiling on usage.
The Pay‑as‑you‑go plans give travelers the choice of credit that is not tied to a fixed validity period; unused credit remains on the account until it is consumed. Examples of the largest options include a plan that costs $299.25 USD for about 15 GB of data and another for $199.50 USD for roughly 10 GB, both offering full‑speed 5G service. Travelers who need extended use can simply add more credit, while those who prefer a pre‑allocated allowance can purchase one of these larger credits.