Ends 3 August
Ends 2 October
Ends 2 October
Ends 2 October
Ends 2 October
FAQs from eSim Flag
What is the eSim Flag flash offer?
It's a free day of unlimited data in any of eSim Flag's 200+ destinations, added automatically with no minimum spend or eligibility criteria required.
Does a longer eSim Flag plan really cost less per day?
Yes. A 3-day plan works out at €3.25 a day, while a 20-day plan drops to €2.00 a day, so booking longer in one go lowers your overall daily rate.
Can I get a refund if my eSim Flag eSIM doesn't work?
Yes, UK eSIMs come with a 30-day full guarantee. Request a refund via WhatsApp or live chat, and approved refunds are processed within 5 to 10 working days.
Do I need to buy a new eSIM every time I travel?
No. An eSim Flag eSIM doesn't expire once installed, so you can top up the same one with a new plan for each future trip instead of buying again.
Can I share my eSim Flag data with another device?
Most plans support hotspot sharing, letting you connect a laptop, tablet, or another phone to your data without needing a separate plan.
How many eSIMs can I buy in one order for a group trip?
Up to 10 eSIMs can be purchased together in a single order, which is useful for family holidays or group travel where everyone needs their own connection.
Will my UK phone number still work if I use an eSim Flag eSIM?
Yes, eSim Flag lets you keep your existing phone number while using its data eSIM, so you don't lose calls or texts while travelling.
What network do eSim Flag's UK plans run on?
UK eSIM unlimited data plans run on the O2 network, giving you coverage built on an established UK mobile infrastructure while you're abroad.
How do I contact eSim Flag for support?
Support is available 24/7 through WhatsApp at +34 696 886 682 or via live chat on the website, for both order help and refund requests.
How quickly do I get my eSIM after buying?
Your eSIM is delivered by email as a QR code immediately after purchase, so there's no waiting for physical delivery before you can set it up.
Save More With Smarter Data Bundles
Travelling with eSim Flag means choosing how much data cover you need and paying a daily rate that drops the longer you commit. Add a flash offer, a money-back guarantee, and the option to reuse one eSIM trip after trip, and there's a genuine saving strategy here rather than a single one-off discount.
Where to Add Your Voucher at Checkout
eSim Flag keeps the saving step simple once you've picked a plan.
- Choose your destination and data plan, then proceed to checkout.
- Look for the Add voucher field above the payment section.
- Paste your eSim Flag discount code into the field and select Apply.
- Check that the order total has dropped before entering your payment details.
- If the code doesn't apply, double-check you haven't already used a single-code limit on the order, that the plan isn't already on a flash-offer price, and that the code matches your destination.
Get a Free Day of Unlimited Data
The flash offer gives every customer one full day of unlimited data free, in any of eSim Flag's 200+ destinations. There's no minimum spend and no eligibility criteria to meet — it's simply added to your plan automatically, making it the easiest of all the eSim Flag offers to claim.
Lower Your Daily Rate by Booking Longer
eSim Flag's UK eSIM unlimited data plans run on the O2 network and are priced per day in euros, with the rate dropping as the plan length increases.
Plan Prices at a Glance
- 3 days: €9.75 (€3.25 per day)
- 5 days: €16.25 (€3.25 per day)
- 7 days: €22.40 (€3.20 per day)
- 10 days: €30.00 (€3.00 per day)
- 15 days: €37.50 (€2.50 per day)
- 20 days: €40.00 (€2.00 per day)
The pattern is consistent: the more days you book in one go, the better your rate. Booking a 20-day plan instead of four separate 5-day plans works out considerably cheaper overall, since you're paying €2.00 a day rather than €3.25. Prices are shown in euros rather than pounds, so it's worth checking the converted total against your card statement before you buy.
Buy Once, Use It Again
An eSim Flag eSIM doesn't expire once installed. Rather than buying a fresh eSIM for every trip, you can top up the same one with a new plan whenever you travel again. That means the setup is a one-off cost, and every future top-up is pure data spend with nothing wasted on reactivation.
Travelling as a Group? Buy Together
eSim Flag allows up to 10 eSIMs in a single order, which suits family holidays or group trips where everyone needs their own connection. Buying together in one transaction makes it easy to split the bill and means nobody is left sorting out a separate purchase at the airport.
Stay Connected Across All Your Devices
Most eSim Flag plans support hotspot sharing, so you can connect a laptop, tablet, or a travel companion's phone to your eSIM's data without buying a second plan. For anyone travelling with more than one device, this turns a single data plan into cover for the whole trip.
A Risk-Free Way to Try It
Every UK eSIM purchase comes with a 30-day money-back guarantee. If the eSIM doesn't activate, doesn't suit your device, or you simply change your mind before using it, you can request a refund through WhatsApp or live chat and have it processed back to your original payment method within 5 to 10 working days.
When You're Covered
The guarantee applies if your eSIM fails to activate, doesn't work with your device, or doesn't match what you expected when you bought it. There's no need to justify a change of mind either — as long as your refund request lands within the 30-day window and goes through WhatsApp or live chat, it's covered.
Official World Cup 2026 Connectivity
eSim Flag is the official eSIM partner of the Spanish national football team for the 2026 FIFA World Cup, reinforcing its focus on dependable connectivity for major trips abroad. Whether you're following the tournament or just heading off on holiday, the same plans, flash offer, and per-day pricing apply.
Customer Support
If you need help with an order, activation, or a refund request, eSim Flag's support team is available 24/7 through two channels.
- WhatsApp: message +34 696 886 682 to get help or start a refund request.
- Live chat: use the on-site chat to ask questions or request a refund directly from your browser.