ETravelSim does not provide a truly unlimited data eSIM for the United Kingdom. All of its plans list a fixed data allowance—most commonly 4 GB per day for 5 to 30 days of validity. After the daily limit is reached, the speed is reduced to 128 kbps.
Customers who need more data can choose high‑capacity fixed plans that are available. For example, the 50 GB plan delivers 50 GB of data over 30 days, and the 10 GB per day plan offers 10 GB each day for 10 days. These plans provide larger data volumes without the unlimited‑speed guarantee, often at a lower cost for heavy users.