A family holiday comes with its own logistics: passports, car seats, snacks for the flight. These days phones are on the list too. One parent is navigating, a teenager wants to stay in touch with friends, a grandparent is waiting for the beach photos. Getting everyone online works best when you sort it out at the kitchen table a few days before you leave, not at the baggage carousel with a tired child on your hip.
Start with who actually needs mobile data
Not every device in the family needs its own connection. A younger child watching downloaded films on a tablet can manage on the accommodation's Wi-Fi. A teenager heading off to explore with friends, or a grandparent who likes to wander, needs a connection that goes with them.
The rule is simple: every phone that needs mobile data away from Wi-Fi needs its own eSIM, because a HelloSIM eSIM is installed on one phone. A quick list helps: who is travelling, which phone each person has, and roughly how each of them uses it.
Check every phone before you buy
Family phones are often a mix of new models and hand-me-downs, so check each one:
- eSIM support. Look for an "Add eSIM" option in the mobile or SIM settings. Most iPhones from the XS and XR onwards support it, as do Google Pixel phones from the Pixel 3, and recent Samsung Galaxy S, Z and many A models.
- Unlocked. A phone that came from a contract may still be locked to that carrier. Ask the carrier if you are unsure.
- Where it was bought. An iPhone from mainland China, Hong Kong or Macao may have two physical SIM slots and no eSIM.
- Parental controls. If Screen Time or similar controls are switched on, they may block changes to mobile settings. You may need to allow mobile data changes temporarily to install the eSIM, then switch the restriction back on.
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Sizing data for each person
Not everyone needs the same plan, and buying person by person avoids paying for data nobody uses. Three rough bands cover most people: about 1 GB a week for light users who mainly navigate and message; 3–5 GB a week for regular users who browse and keep up with social media; and 10 GB or more for heavy users who stream video, make video calls or work on the go.
In a typical family that might look like this:
- The parent doing the navigating and bookings: regular, because maps, booking apps and messages run all day.
- A teenager: regular to heavy, depending on how much video and social media they watch away from Wi-Fi.
- A younger child with their own phone: light, mostly messages and the occasional call to grandparents.
- Grandparents: light to regular; video calls home are the thing that adds up.
Plans differ by data amount and number of days, so match the days to the length of the holiday. If someone runs low, you can top up that person's eSIM from the Check / Top up page, your account or the app, and the extra data is added to the same eSIM without reinstalling anything.
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Setting up the phones at home
One adult can handle the whole job. Buy the eSIMs as a guest with your email address or from your HelloSIM account; each QR code is delivered by email straight away and also kept in your account. Open the QR codes on a laptop or tablet, then scan each one with the phone it is meant for: on iPhone through Settings → Mobile Service (or Mobile Data) → Add eSIM, on Android through the SIM settings under Network & internet or Connections.
A few habits make arrival day calmer:
- Keep a note of which QR code went on which phone, since each eSIM belongs to one phone.
- Label the new line on each phone, for example "Travel".
- Leave the travel line switched off until you land.
- Do it all on home Wi-Fi a few days before departure, so there is time to fix any surprises.
Teenagers and younger children
Teenagers usually manage the switch themselves, but a short conversation helps. Explain that their plan has a set amount of data, show them where to check it, and suggest downloading playlists and shows on Wi-Fi before going out. Turning off video autoplay in social apps makes a real difference. Their own SIM stays in the phone, so their usual number and WhatsApp carry on as normal.
For younger children, agree a meeting point in case a phone runs out of battery or loses signal, and make sure they know your number by heart or have it written down. Location sharing in your phones' built-in apps is useful in busy places and uses only a little data.
Grandparents and less confident relatives
Older relatives often worry most about surprise bills and changed numbers, so reassure them on both. HelloSIM eSIMs are data-only: their usual number stays in the phone for calls and texts, and WhatsApp keeps working on the number they already use. Calls to their usual number while abroad may still be charged by their carrier, so calls over WhatsApp or FaceTime are the better habit.
Install the eSIM with them, ideally at your home or theirs, and turn off data roaming on their home line together. Write the arrival steps on a card they can keep in their phone case, or simply do the switch for them in the arrivals hall.
Arrival day: getting everyone connected
Before anyone leaves the arrivals hall, gather the phones and go round them one by one. On each, take it out of aeroplane mode, switch on the HelloSIM line and make it the line used for mobile data. Then enable data roaming on that travel line, which it needs in order to connect; the data is prepaid, so this adds nothing to the cost. Finally, check that roaming stays off on that person's home line.
A quick test, such as loading a map, confirms each phone is ready before you head for the taxi rank. If one phone still refuses, restarting it or toggling aeroplane mode often sorts it out. If not, email [email protected] or message the team through the live chat in the HelloSIM app.
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