GLOBAL YO does not provide an unlimited data eSIM for Guernsey. All of its eSIM offerings for the island come with fixed data allowances, the largest being 100 GB per plan.
Travelers looking for a high‑capacity option can choose from plans such as the Guernsey – 60 Days – 100 GB, which costs $109.99 USD and stays active for 60 days, or the Global Explorer – 365 Days – 100 GB, priced at $159.99 USD with validity of 365 days. These fixed‑data plans cover Guernsey and may be more cost‑effective than unlimited plans for most users, unless a traveller expects to consume data at a very heavy rate.