How to Use Your Phone Abroad: Smart Travel Tips for Staying Connected
Your phone can make travelling far easier. It helps you navigate unfamiliar streets, check transport times, translate menus, manage bookings, and share updates with the people back home.
But using your phone overseas without preparing first can lead to expensive roaming charges, unreliable Wi-Fi, or security risks. With a few simple steps—and the right travel eSIM—you can stay online throughout your trip without depending on your home carrier.
Here are practical tips for using your phone abroad with confidence.
1. Turn off roaming on your primary SIM before you leave
The easiest way to avoid unexpected charges is to disable data roaming on your regular home SIM before your journey begins.
Your home carrier may charge high rates whenever that SIM connects to a foreign mobile network. Even background activity such as photo backups, app refreshes, map updates, or social-media notifications can use data without you noticing.
Before departure, check these settings:
- Turn off Data Roaming on your primary SIM.
- Make sure your primary SIM is not selected as your mobile-data line.
- Disable mobile data for apps that do not need it while travelling.
- Review your phone’s data-usage screen so you can spot unusual consumption quickly.
Important: if you use a travel eSIM, you may need to turn Data Roaming on for the egoViet eSIM only. This does not mean you should enable roaming on your primary SIM. Always follow the instructions supplied with your specific EGoViet plan.
2. Do not rely on Airplane Mode as your only solution
Airplane Mode is useful during a flight and can stop your phone from connecting to cellular networks. However, it is not a complete travel-data strategy.
When Airplane Mode is enabled, you can manually turn Wi-Fi or Bluetooth back on. You may also forget to re-enable the settings you need after landing. A better approach is to set your primary SIM correctly, then use a dedicated travel data plan for your trip.
Use Airplane Mode when you want to be completely offline. Use an EGoViet eSIM when you want dependable mobile data abroad without relying on your home carrier’s roaming plan.
3. Choose a prepaid travel eSIM before departure
A prepaid eSIM is one of the most convenient ways to get mobile data while travelling. Instead of finding a local SIM-card shop after landing, you can buy a plan online, install it before your trip, and connect when you arrive.
With an egoViet travel eSIM, you can choose a plan based on:
- Your destination
- The number of travel days
- The amount of data you expect to use
- Whether you are visiting one country or several countries in a region
An eSIM is digital, so there is no physical SIM card to remove or replace. You can keep your usual SIM in your phone for calls, messages, and WhatsApp while using the EGoViet eSIM for travel data.
Before purchasing, make sure your phone is carrier-unlocked and supports eSIM technology.
4. Do not depend only on public Wi-Fi
Free Wi-Fi can be helpful at a hotel, café, airport, or train station—but it should not be your only way to get online.
Public Wi-Fi may be slow, unavailable when you need it, or unsecured. It can also be difficult to use when you urgently need directions, a ride-hailing app, an online ticket, or a translation tool.
A travel eSIM gives you mobile data when you are away from Wi-Fi. That means you can:
- Use Google Maps while exploring
- Book transport or check travel updates
- Message family and friends
- Access reservations and boarding passes
- Search for restaurants, attractions, or emergency information
- Stay connected when your hotel Wi-Fi is weak
Use Wi-Fi when it is secure and convenient, but keep mobile data available as your reliable backup.
5. Prepare your phone’s security before travelling
Your phone often contains your payment details, email accounts, travel documents, photos, and personal information. Losing it abroad can be stressful, so take a few minutes to secure it before you leave.
We recommend that you:
- Use a strong passcode, fingerprint, or face unlock.
- Turn on Find My iPhone or Find My Device.
- Back up important photos and files to a trusted cloud service.
- Update your phone and important apps before departure.
- Save copies of your passport, bookings, and emergency contacts somewhere secure.
- Use two-factor authentication methods you can still access if you cannot receive a text message.
- Use a password manager instead of saving passwords in notes or screenshots.
If you connect to public Wi-Fi, avoid logging into sensitive accounts unless necessary. A VPN can add an extra layer of protection, especially when using open networks.
6. Disable automatic joining for open Wi-Fi networks
Your phone may automatically connect to nearby Wi-Fi networks, including public networks with weak security. This can be convenient at home, but it is not ideal while travelling.
On iPhone, go to:
Settings > Wi-Fi > Ask to Join Networks
Choose Ask or Notify instead of connecting automatically.
On Android, the steps vary by device, but look for Wi-Fi settings such as:
Settings > Network & Internet > Wi-Fi > Wi-Fi preferences
Then turn off options such as Connect to open networks automatically.
This gives you more control over which networks your phone joins.
7. Protect your phone physically too
Cybersecurity matters, but so does protecting your device from drops, water, theft, and loss.
Bring a protective case and, if possible, a screen protector. Keep your phone in a secure pocket or bag in crowded places. A portable power bank is also worth carrying, especially on long travel days when you depend on your phone for maps and tickets.
A little preparation can save you from a broken screen—or from losing access to the information you need most.
Stay connected abroad with EGoViet
Travelling with your phone should feel simple, not stressful. By switching off roaming on your primary SIM, preparing your security settings, and using a prepaid travel eSIM, you can stay connected without worrying about surprise charges.
EGoViet offers travel eSIM plans for destinations around the world, with instant digital delivery and simple setup. Choose your destination, install your eSIM, and get ready to connect when you arrive.
Explore egoViet travel eSIM plans before your next trip.
Frequently Asked Questions
What is data roaming?
Data roaming allows your phone to use a mobile network outside your home carrier’s normal coverage area. For example, when you travel from the United States to Japan, your home SIM may connect to a Japanese network through a roaming agreement.
This can be convenient, but home-carrier roaming charges may be expensive.
Should I turn data roaming on or off when travelling?
Turn off data roaming on your primary home SIM if you do not want it using overseas data.
If you install an EGoViet eSIM, check its setup instructions. Some travel eSIMs require Data Roaming to be enabled on the travel eSIM in order to connect to a local network.
Can I use my phone abroad without paying roaming charges?
Yes. You can turn off roaming on your home SIM and use a prepaid travel eSIM, a local physical SIM, or Wi-Fi instead.
An EGoViet eSIM lets you add travel data without removing your main SIM card.
Does Airplane Mode stop roaming charges?
Airplane Mode turns off your phone’s cellular connection, so it can prevent your phone from connecting to a mobile network while it remains enabled.
However, once you turn Airplane Mode off, your primary SIM may connect again if roaming is enabled. For better control, turn off data roaming on your primary SIM and choose a separate travel-data option.
Can I use Wi-Fi while Airplane Mode is on?
Yes. You can enable Airplane Mode and then manually turn Wi-Fi back on. This lets you use Wi-Fi without connecting to a cellular network.
Will I still keep my phone number with an eSIM?
Usually, yes. Your primary SIM can remain active for your usual phone number, calls, and messages, while your egoViet eSIM provides mobile data abroad. Your phone settings allow you to choose which line handles calls, messages, and data.