AlpineSIM eSIM Data Plans for Guernsey

AlpineSIM does not provide a truly unlimited‑data eSIM for Guernsey. The plans labeled “Unlimited Europe eSIM” each have a data cap of either 500 MB/day, 1 GB/day or 2 GB/day, and after the allotted amount is used the speed is reduced.
Instead, AlpineSIM offers fixed data plans for Guernsey, such as the 50 GB plan valid for 180 days, the 20 GB plan for both 30 days and 90 days, and the 10 GB plan for 30 days, all on 5G networks. These plans deliver full‑speed data until the data allowance is exhausted and can be more economical for most travelers unless extremely heavy data use is required.

AlpineSIM does not sell a Guernsey eSIM that includes a phone number or SMS capability. The provider offers only data‑only eSIMs for Guernsey. Travelers who need to communicate while abroad can use VoIP applications such as WhatsApp, Telegram, or iMessage over the data connection, which provide voice and messaging without the need for a local phone number or SMS service.

AlpineSIM lists 5 single‑country data plans and 32 multi‑country plans that cover Guernsey. The pricing for these options ranges from about $2.33 to $166.83, while the data caps vary from 500 MB up to 50 GB over validity periods that can be as short as one day or as long as 180 days. Some plans apply a daily data cap, delivering a fixed amount each day of the validity, whereas others offer a single, fixed amount that can be used at any point during the period. Many of the plans also allow tethering, enabling the data to be shared with other devices.