★★★★★
Worked the second I landed.
I was online before my luggage hit the belt. No app, no setup stress, no €10/day roaming bill from my carrier. Total game changer.
United Kingdom Unlimited eSIM
eSIM data plan
United Kingdom Unlimited eSIM
Total$0.80
Use In: 🇬🇧
Top Up Available: No
Data Only: Yes
SMS: No
Calls: No, only through apps (VOIP)
Compatibility: Check compatibility
Get highest speeds with this eSIM plan. Start your eSIM instantly upon arrival and enjoy high-speed data with no hidden roaming fees.
This Unlimited data plan lets you select the number of days. Data usage is reset every 24 hours. Unlimited 2G speeds.
Pre-Activation Days
180 Days
Data Exit Country
FR/NL
Hotspot
Yes
Speed Reduction
Yes
Coverage
GB
Networks
GB - T-Mobile UK 5G, GB - 3 4G, GB - O2 5G, GB - O2 4G
Supported Countries
United Kingdom
Got questions?
FAQ
Will my phone work with Uonfly eSIM?
Most phones from 2018 onward support eSIM. That includes iPhone XR/XS or newer, Samsung Galaxy S20+, Google Pixel 3+, and most modern Android flagships.
Two things to check: your phone needs to be unlocked (not locked to a carrier contract), and eSIM must be enabled. We run an automatic compatibility check before you pay — so there are no surprises after purchase.
Will I get a phone number with my eSIM?
No — Uonfly is a data-only eSIM. You don't get a new phone number, and you don't need one.
That's actually the point: you keep using your home number for WhatsApp, iMessage, Signal, calls, and SMS. The eSIM just gives you internet at local prices.
Can I keep using WhatsApp on my normal number?
Yes, absolutely. WhatsApp, iMessage, and most messaging apps run on internet — not on cellular voice. Your home number stays linked to your physical SIM (or eSIM), the Uonfly eSIM just provides the internet connection.
Tip: keep your home SIM active but turn data roaming OFF for it, so you don't accidentally get charged.
How fast do I get my eSIM after payment?
Instantly. The QR code lands in your inbox within seconds of payment. If it's not there in 60 seconds, check spam — and if still nothing, contact support and we'll resend immediately.
Can I use the eSIM as a hotspot?
Yes — tethering and hotspot are fully supported on all our plans. Share with your laptop, tablet, or travel buddies. Speed and stability stay the same as your phone connection.
What if it doesn't work after I land?
That's exactly when good support matters. Reach us via the in-app chat, email, or WhatsApp — average reply time is under 3 minutes, 24/7.
If we can't get you online within an hour of you reaching out, you get a full refund, no questions asked. That's our 30-day money-back guarantee.
Can I use one eSIM in multiple countries?
Yes — we offer regional plans covering Europe (45+ countries), Asia (20+ countries), Latin America, and global. Buy once, cross borders, stay connected.
For longer multi-country trips, our Global plan works in 130+ countries on a single eSIM.
Is there speed throttling or a fair-use policy?
On our Unlimited plans: 2 GB highspeed per day, then unlimited at 1 Mbps for the rest of the day. Resets at midnight local time. We tell you this before you buy — not in fine print after.
On regular GB plans (1 GB, 5 GB, 10 GB...): no throttling at all. You get what you paid for.