eSIM for a family or group: share one or buy one each?
Short answer: Sharing one eSIM through a phone’s hotspot is the cheapest option and works well when the group stays together and mostly uses messaging, maps and photos. One eSIM each costs more but is the better choice when people split up, use video heavily, or have their own devices. A mix — one or two adults on their own eSIMs, children tethering to them — is often the sweet spot.
Travelling as four people triples the arithmetic and doubles the arguments. The question every family hits is whether to buy one plan and pass the data around, or give everyone their own. Both are legitimate, and the numbers below, taken from the live catalogue, show where each one wins and where it does not.
The two approaches
One shared eSIM. One adult’s phone holds the travel eSIM and shares it as a hotspot to everyone else’s phone and tablet. You buy one plan, everyone draws from the same allowance, and the cost is a single price. Hotspot is enabled on every plan we sell. The details are in our guide to sharing data from your phone.
One eSIM each. Every compatible phone gets its own plan. Nobody depends on anyone else’s battery or location, and each person has a separate allowance, but you pay for every one and you must install every one.
Sizing it: the maths for a family of four
Start from a planning assumption you can adjust, not a promise. Say a person using maps, messaging, photos and a little browsing gets through somewhere around 300 MB a day — a rounded figure, higher with video. For four people over a seven-day trip:
4 people × 7 days × 0.3 GB ≈ 8.4 GB
That points to a 10 GB shared plan, with headroom for a couple of video-heavy evenings. If your children stream on the plane transfer or in the hotel, push the assumption up and the answer moves with it.
What it costs, worked for Italy
Using Italy as the example, the cheapest plans as this page was built:
| Approach | Plans | Total |
|---|---|---|
| One shared plan | 10 GB, 30 days | £8.49 |
| One shared, larger | 20 GB, 30 days | £13.49 |
| One each, small | 4 × 3 GB, 30 days | £13.96 |
| One each, minimum | 4 × 1 GB, 7 days | £5.96 |
Sharing a 10 GB plan is £8.49 against £13.96 for four 3 GB plans — £5.47 cheaper, for a similar amount of data (10 GB shared against 12 GB in total). The smallest option, one gigabyte each, is the cheapest on paper at £5.96 but only works for very light use. Japan prices differently: 10 GB is £8.99 and 3 GB is £3.99, so run the same sum for wherever you are going — the figures are on each country page.
Where sharing goes wrong
- The group splits up. A hotspot reaches a few metres, not across a city. The moment someone wanders off, they lose connection.
- The host phone suffers. Sharing drains the battery and warms the phone. Carry a power bank, and keep the host phone for the person least likely to go missing.
- Device limits. Phones generally cap how many devices can join a hotspot at once, so check yours before relying on it for six people.
- One allowance, many appetites. A single teenager streaming video can empty a shared plan that was sized for maps and messages.
Children, tablets and the sensible hybrid
A child’s phone needs to be eSIM-capable and carrier-unlocked to take its own plan; check it against the device list. Cellular tablets can take an eSIM too, but a tablet used for films burns data fast — see eSIMs for iPads and tablets.
For most families the sensible hybrid is two eSIMs on the parents’ phones, so each adult is independent, with the children tethering to whichever parent they are with. If you are unsure which provider model suits a group, our comparison guide sets out the questions to ask, and the data-needs guide helps you size it.
Habits that make a shared plan last
A shared allowance works only if nobody treats it as private, so agree three small rules at the start of the trip. Download films, games and playlists on hotel Wi-Fi before the day begins. Turn off automatic app updates and cloud photo backup on every device, because the whole family’s backups will otherwise arrive at once. And check the remaining data at the end of each day in the app under My eSIMs, so a surprise at 9pm does not become an argument.
If the allowance does run short, eligible fixed-data eSIMs can be topped up in the app, which is usually quicker than buying and installing a second plan. Nothing renews on its own, so there is no surprise charge waiting at the end of the month.
A short checklist before you buy for everyone
- Confirm every phone and tablet you want covered supports eSIM and is carrier-unlocked.
- Decide who the host phone is, and charge it, and pack a power bank.
- Pick the size with the arithmetic above, then add a little headroom rather than a lot.
- Install every plan on Wi-Fi at home, not at the airport.
- Keep each home SIM in place with data roaming off, so a stray setting cannot run up a bill.
Every price and plan size on this page was read from our live catalogue when the page was built. Usage figures are rounded planning numbers, not measurements, and real use varies by app, device and quality setting. We quote no other provider’s prices. Last reviewed 7 November 2026.
