JamboSim eSIM Data Plans for Montserrat

JamboSim does not provide a truly unlimited high‑speed data plan for Montserrat. The only plan labeled “Unlimited – 7 days” actually offers 3GB of high‑speed data per day; once the 3GB quota is reached the speed drops to 1000kbps. Therefore, the plan is not unlimited in the sense of unlimited high‑speed data.

Travelers can choose from fixed data plans instead. For example, JamboSim offers a 20GB plan valid for 30 days or a 20GB plan valid for 365 days, both of which include tethering and provide full high‑speed data without a throttling clause. These fixed plans may be more cost‑effective for most users unless very heavy data use is expected.

JamboSim does not provide Montserrat eSIM plans that include a phone number or SMS capability. Only data‑only eSIM options are available for travelers heading to Montserrat.

Travelers who need voice and messaging can use popular VoIP apps such as WhatsApp, Telegram, and iMessage over the data connection provided by the JamboSim plan.

JamboSim offers four single‑country data plans for Montserrat. There are no dedicated multi‑country plans that include Montserrat in their coverage list. The plans range in price from roughly $1.99 to $106.99 and provide data caps between 200 MB and 20 GB. Among the available options, most are fixed‑data quantities while a small subset uses daily data caps, giving travelers flexibility in how they consume data over the validity period.