Check whether your existing plan covers the destination first. If it does not, a travel eSIM installed before departure is a convenient way to have data on arrival with a compatible phone. A local SIM suits travellers who need a national number, a pocket wifi suits devices staying together, and hotel wifi handles large downloads. Compare the whole itinerary rather than only the first airport offer.
Start with the countries and the service you already have
List destinations, stopovers where you want data and travel days. Check data, outgoing calls, incoming calls and texts separately with your home provider. Save the terms and look at what happens when an allowance or travel pass ends. A neighbouring country is not automatically covered by the same package.
For UK lines, review the provider's current overseas terms rather than assuming pre-Brexit EU inclusion. Ofcom's overseas-mobile guidance, checked on 1 November 2026, recommends checking the package before travel. If you already have enough service for the journey, you may not need another connection.
For US and Australian lines, apply the same destination-by-destination comparison to your contract. An eligible European line's roam-like-at-home terms do not automatically apply to a non-European SIM arriving in Europe. Keep access to the number used by important accounts and complete verification before the flight.
Travel eSIM: prepare arrival data before flying
An eSIM adds a digital line without replacing the physical home SIM. Check device compatibility and unlocking, then choose the destination, duration and allowance. The product's destination page shows its networks and, when specified by the supplier, the country where the connection exits to the internet.
Our eSIM is data-only and does not provide a new number for ordinary calls or texts. Install it before departure; the plan starts on the first connection in the destination. At arrival, select it for mobile data and enable its roaming as instructed. The installation guide explains the setup.
For a covered stopover before the main holiday, consider that the line could make its first connection there. Review when the eSIM starts and keep the order accessible. Where the plan allows a top-up, you can add service to the same eSIM. Keep the profile installed until the journey ends.
Home-line roaming: use what is genuinely included
Roaming keeps your existing line working on a visited network. It can be convenient when your plan already provides enough allowance. Outside that inclusion, compare the provider's travel option and the total duration rather than assuming that a daily pass and a full-trip package cost the same.
Switching off data roaming on the home SIM does not turn off all voice calls and texts. If the eSIM supplies internet, select it as the data line and avoid automatic switching when you do not want home-line data used. The home number retains its own conditions for services you leave enabled.
For European travel, the Commission's country and fair-use guidance, checked on 1 November 2026, explains eligible lines and participating destinations. The UK, Switzerland and Andorra require checking commercial inclusion. Read what roaming means to separate the phone setting from the bill.
Local physical SIM: useful for a national number
A local SIM can suit an unlocked phone without eSIM or a longer stay needing national calls. Buy through an identified operator shop or authorised seller and complete the destination's subscriber registration. Check the documentation before relying on an online process designed for residents.
Ask for the card, activation and service package as separate parts of the total. Review general data versus app-specific allowances, daily versus total data and validity. A cash balance is not automatically a bag of gigabytes. Test the connection before leaving and keep the receipt, number and top-up instructions.
Allow time for the process, especially after a late flight. Compare that with having a travel eSIM installed at home. If you need a local number for an app, confirm its account requirements as well: buying internet does not complete a financial account or replace an identity check.
Pocket wifi and sharing from a phone
A pocket wifi shares its mobile connection with nearby devices. Compare data, coverage, battery, collection, return and rental conditions. It can work well for equipment staying at one base, but the connection travels with the device when somebody leaves.
A phone hotspot shares mobile data without another router. Our eSIM allows it; add every connected device's usage to the same package and protect the wifi connection with a password. Read sharing mobile data for iPhone and Android. Independent connections are more practical when travellers separate for different activities.
Before connecting a laptop, check updates, cloud syncing and pending downloads. A phone and laptop following the same itinerary can use very different amounts of data. Take a charger and reserve large transfers for a base where you have checked both mobile reception and the accommodation's wifi.
Hotel and public wifi
Wifi is useful for backups, planning and downloading documents. It may be enough if the trip stays mostly within a connected accommodation. Before leaving that network, save the next address, tickets and pickup point. Reception in the lobby does not establish the connection in a separate apartment or guesthouse building.
Confirm the network and use authentic apps or websites. HTTPS encrypts traffic to a website, but a fraudulent site can use it too; the US cybersecurity agency advises confirming a hotspot's name with the venue and turning off file sharing on public networks: CISA, securing wireless networks, checked on 3 November 2026. Do not ignore certificate warnings or install an unknown profile just to join an alleged hotel network.
Match the connection to the trip
- A short trip with included roaming: check allowance and use the existing service.
- A route with several arrivals: prepare the eSIM, maps and transfers before leaving.
- A long stay needing local calls: compare a registered national line and top-ups.
- A group staying together: add consumption and compare hotspot with a portable router.
- A work trip: test the accommodation's connection and keep travel time for offline tasks.
Choose data from your usage history, not a universal average for the destination. Review how much data you need, pause photo backups and check the counter after the first day. Read running out of data before the allowance ends.
More help before departure
- Roaming and the data switch.
- 3G, 4G, LTE and 5G.
- Sharing data.
- Pocket wifi and public networks.
- Finishing a data allowance.
- Buying, installing and starting the eSIM.
Complete account verification, download the first transfer and keep the installation instructions available. In an aircraft or on a boat, follow crew instructions and review onboard wifi separately from the destination's terrestrial data package. Those preparations let you choose a connection for the journey you will actually make.