Simbye does not provide a true unlimited data eSIM for the United Kingdom. The plans titled “United Kingdom Unlimited 7 days, ” “Unlimited 15 days, ” and “Unlimited 30 days” offer 2 GB per day of full‑speed data; once that daily allowance is reached the speed throttles to 1 Mbps while the data remains unlimited. Because the speed is reduced, these plans are not considered unlimited high‑speed bundles.
For travelers who need higher data volumes, Simbye offers fixed‑data alternatives. For example, the United Kingdom 200 GB 30 days plan gives 200 GB of full‑speed data for a month, and the United Kingdom 50 GB 180 days plan offers 50 GB for six months. Such fixed‑data plans can be more cost‑effective than the “Unlimited” packages for users who do not require constant high‑speed connectivity.