JamboSim eSIM Data Plans for Guernsey

JamboSim does not provide an unlimited‑data eSIM option for travelers visiting Guernsey.
Instead, the provider offers fixed‑data plans that cover the island. For example, the eSIM JamboSim Global 20GB / 30 days plan costs $40.99 USD and includes both tethering and coverage in Guernsey and 192 other countries. A larger, longer‑validity option is the eSIM JamboSim Global+ 20GB / 365 days plan for $105.99 USD, also covering Guernsey plus 164 countries. Choosing a fixed data plan can be more cost‑effective unless a user requires very heavy data usage, at which point an unlimited plan would be necessary—but JamboSim does not offer one for Guernsey.

JamboSim offers eSIM plans that include a phone number and SMS capability for travel to Guernsey. The plans range from 1GB of data with a validity of 7 days at a price of $11.99 USD to 20GB of data with a validity of 365 days at $105.99 USD.

All available plans use the dialing code +1, which is not a local Guernsey number; the plans allow outbound voice calls and outbound SMS, but do not support inbound calls or inbound texts. Travelers who need specific functionality are advised to confirm the details directly with JamboSim.

JamboSim offers 18 multi‑country data plans for Guernsey, with no single‑country options available. The plans range in price from about $1.99 to $106.99 and provide data between 200 MB and 20 GB, with validity periods from 3 to 365 days.