ZenSim eSIM Data Plans for Guam

ZenSim does not provide an unlimited data eSIM for Guam. The plan listed as “Guam Unlimited STANDARD – 5 Days” actually offers 3 GB per day for 5 days with a reduced speed of 1000 kbps once the daily limit is reached, so the data allowance is limited.

Zensim does offer fixed data plans that may suit higher‑volume users. For example, a 10 GB plan is available for 15 days or 30 days, and a 5 GB plan is offered for 5 days, 15 days or 30 days. These fixed‑data plans provide up to 10 GB of high‑speed data within the specified validity period and are generally more cost‑effective unless a traveler is a heavy data consumer.

ZenSim does not provide an eSIM plan that includes a local phone number or SMS capability for Guam; only data‑only plans are offered. No outbound or inbound voice or SMS service is available on these plans.

Travelers can still use VoIP applications such as WhatsApp, Telegram, or iMessage over the data connection to make calls and send messages. However, some destinations can block or restrict certain apps or VoIP services, so users should verify that the applications they rely on are accessible in Guam before making a purchase.

ZenSim offers 12 single‑country data plans for Guam. All plans cost between $23 and $192, provide data caps ranging from 1 GB to 10 GB, and last 5 to 30 days. The catalogue includes one daily‑data‑cap option, while the remaining 11 plans have fixed data amounts. Tethering is allowed on these plans.