eSimfly eSIM Data Plans for United Kingdom

eSimfly does not provide a truly unlimited data eSIM for the United Kingdom. All of its plans that carry the “Unlimited” label actually limit high‑speed data to 3GB each day, after which the connection speed drops to 1000kbps. The largest daily data allowance available from eSimfly is 3GB/day for up to 30 days at a price of $29.99, while other carriers offer higher fixed caps, such as O2 Unlimited 650GB for 30 days at $35.88 or Vodafone Travel 500GB for 30 days at $39.32.

Because of the daily cap, travelers who need a large amount of high‑speed data may find a fixed‑data plan more cost‑effective unless they are extremely heavy data users who would benefit from a higher daily ceiling.

eSimfly provides United Kingdom eSIMs that include a phone number and SMS functionality. Prices start at $17.84 USD and go up to $125.54 USD, with validity periods ranging from 15 days to 90 days. The phone numbers feature either the international dialing code +44 – which is a local UK number – or +33, which is a French number; all plans allow inbound and outbound voice calls and inbound and outbound SMS. Users should check the specific plan details with eSimfly if they need a particular dialing code or additional functionality.

eSimfly provides a mix of single‑country and multi‑country data plans for travelers visiting the United Kingdom. Overall, 35 single‑country plans are available, while 61 multi‑country plans are offered. The plans range in price from about $1.85 to $125.54 and provide data caps from 1 GB up to 650 GB, with validity periods spanning 3 to 365 days. Some plans use a fixed data amount, giving customers a set quantity of data for the whole validity, whereas others employ a daily data cap, limiting the amount of data allowed each day. Both options allow tethering, though speeds may be reduced to a maximum of 1000 kbit/s for certain plans.