giffgaff international roaming: how it works, what to check, and when a travel eSIM wins
Key facts
- giffgaff roaming can be included or charged per day depending on destination and goodybag — always confirm the current rate in the giffgaff app before flying.
- Carrier roaming almost always means a daily data allowance and reduced speeds once you pass it.
- A VoaSim eSIM costs USD 23.90 for 7 days, USD 30.90 for 10 days and USD 61.90 for 30 days, with truly unlimited data and no throttling.
- You can keep your giffgaff SIM for calls and SMS and use the eSIM only for data — just turn giffgaff data roaming off.
- Carrier roaming still wins for 1–2 day trips, light use, included destinations, or phones without eSIM support.
See the exact price for your dates
You are on giffgaff, you have a trip booked, and you want to know what happens to your data the moment you land. The honest answer: it depends on where you are going and which goodybag you are on. Roaming rules change by country and by plan, so the only reliable source is the giffgaff app or website on the day you check.
This page explains the model in plain English, gives you a pre-flight checklist, and shows exactly when a travel eSIM like VoaSim costs less and worries you less.
How giffgaff roaming works, in plain English
Carrier roaming works on one of two models, and giffgaff — like most UK networks — uses a mix depending on destination:
- Included roaming: in certain destinations your goodybag allowance can be used abroad, normally with a daily or monthly data cap that is smaller than your UK allowance.
- Pay-as-you-go roaming: outside those destinations, data, calls and texts are charged per unit or per day from your credit.
Three things are almost always true with carrier roaming, whichever network you are on: there is a limit, speeds can be reduced once you pass it, and roaming usually has to be enabled before or on arrival. Rates and country lists change, so never rely on a blog (including this one) for the amount. Open the giffgaff app, find your destination, and read the current terms. Then decide. See our wider roaming guide for how other networks structure the same thing.
Pre-flight checklist if you stick with giffgaff
If you decide carrier roaming is the right call, do this before the airport:
- Search your destination in the giffgaff app and note whether it is included or charged, and the daily data allowance.
- Check that roaming is switched on for your account and on the handset (Settings → Mobile Data → Data Roaming).
- Top up or make sure your goodybag renews mid-trip, so you are not cut off on day 9.
- Turn off background app refresh, auto-play video and cloud photo backup — that is where roaming allowances disappear.
- Download offline maps and boarding passes before you fly.
- Set a data warning on your phone so you see the cap coming.
Do the same checks for any family phone travelling with you. One teenager streaming on a shared plan can burn a daily allowance before lunch.
When giffgaff roaming is genuinely the better choice
We sell eSIMs, but we are not going to pretend roaming never makes sense. Keep your giffgaff SIM as your only connection when:
- The trip is 1 to 2 days and you only need maps and messaging.
- Your destination is included in your goodybag at no extra cost and your usage is light.
- You need to receive calls and SMS on your UK number as the main point of the trip — a data-only eSIM does not replace voice and SMS.
- Your phone has no eSIM support (dial
*#06#: no EID, no eSIM) or is carrier-locked. - You are going somewhere we do not cover, such as the island Caribbean (Dominican Republic, Cuba, Jamaica, Bahamas, Aruba, Curaçao). Puerto Rico is fine — it runs on US networks.
In those cases, the cheapest move is the one already in your pocket.
When a VoaSim eSIM wins: the exact numbers
The VoaSim price is the same for every destination we cover, so you can budget before you even pick a hotel. Today's promo prices:
| Duration | Price | Per day |
|---|---|---|
| 5 days | USD 18.90 | USD 3.78 |
| 7 days | USD 23.90 | USD 3.41 |
| 10 days | USD 30.90 | USD 3.09 |
| 15 days | USD 42.90 | USD 2.86 |
| 30 days | USD 61.90 | USD 2.06 |
| 60 days | USD 106.90 | USD 1.78 |
Data is truly unlimited: no cap, no throttling, no hidden fair-use clause. Trips of 1–4 days pay the 5-day price, and a second eSIM in the same order gets 10% extra off. Coverage is 170 destinations, and the Europe plan covers 50 countries — Switzerland, the UK, Turkey, Norway and Iceland included — on one eSIM. Run your dates through the price simulator to confirm.
You can keep giffgaff and add the eSIM
This is not either/or. Your physical giffgaff SIM stays in the phone and your UK number keeps working for calls and SMS. The eSIM sits alongside it and carries the data.
The setup that works for almost everyone:
- Buy the eSIM; the QR code arrives by email within minutes.
- Install it at home, before you fly, but keep the eSIM line switched off (on Android, do not enable its data yet). Your days only start counting at the first connection to a network at the destination.
- Turn off data roaming on giffgaff so it cannot quietly bill you.
- On landing, switch the eSIM line on and set it as your data line.
WhatsApp, iMessage, Google Maps, Uber and app calls all run over data, so nothing changes in practice. If something does not connect, our free eSIM Rescue tool diagnoses eSIMs of any brand, and if we cannot fix it you get a 100% refund. More on how we operate on the trust page.
giffgaff roaming vs VoaSim eSIM: side by side
A fair summary of what each option actually gives you:
| giffgaff roaming | VoaSim eSIM | |
|---|---|---|
| Data amount | Daily or monthly allowance, speeds may be reduced after | Truly unlimited, no throttling |
| Price visibility | Varies by country and plan — check the app | Fixed table, same for every destination |
| Voice and SMS on your number | Yes | No (data only; app calls work) |
| Setup | Enable roaming before travel | Install QR code at home, activate on landing |
| Payment | Goodybag or credit | Card in USD via Stripe, invoice by email |
| Best for | Short trips, light use, included destinations | Week-plus trips, heavy data, multi-country routes |
See how other brands stack up on our comparison hub.
Why trust VoaSim?
Registered company with an invoice on every purchase, USD payment via Stripe with no hidden fees, human support and a guarantee: if the eSIM will not connect and support cannot fix it, you get 100% back.