Which SIM Should Use Mobile Data Overseas?

1. After landing, use airport Wi-Fi only after you can sign in and open a normal webpage. If that does not work, use hotel Wi-Fi or another steady trusted connection. Then install from the saved setup email.
2. Label the travel line SIM Shop Travel if the phone offers a label.
3. Choose that travel line for mobile data and turn off automatic data switching.
4. Apply travel-line roaming only if the email requires it and leave the Australian line’s data roaming off.

iPhone

Open Settings > Mobile Service, Cellular or Mobile Data. Choose Mobile Data, select the travel eSIM, then open that travel line’s options only if the order email says it needs Data Roaming. Keep the Australian line’s Data Roaming off unless you deliberately use home-carrier roaming.

Samsung Galaxy

Open Settings > Connections > SIM card manager. Under Primary SIM or Preferred SIM card, select the travel eSIM for mobile data and switch Auto data switching off unless support says otherwise. The roaming control can vary by Galaxy model, so use it only when the order email identifies the travel line.

Google Pixel

Open Settings > Network & internet > SIMs. Under Your primary SIMs, choose the travel eSIM for Mobile data and keep Automatic data switching off unless support has advised otherwise. Follow the order email for the travel line’s roaming setting.

Other Android

Search Settings for SIM, mobile network or mobile data. Select the travel eSIM for data, keep automatic data switching off if the phone offers it, and use only the roaming or APN instructions supplied for your own order.

• Do not assume a data-line choice turns off calls/SMS by itself.
• Do not enable travel-line roaming unless the order email instructs it.

Email hello@thesimshop.com.au with the order number, exact phone model and a screenshot of the SIM or Mobile Data screen with QR and activation details hidden. Say which line is currently selected for data and whether the Australian line’s roaming is off.

Switching off Australian-line Data Roaming controls mobile data. It doesn’t block ordinary calls, voicemail or every other roaming charge. Check the home carrier’s rules for those separately; turn that line off if you don’t need its number.

Information checked: 19 July 2026.

These links support the phone menus and safe setup checks used in this guide. Phone labels can vary by model and software version, so follow the screen on your own device and the instructions in your order email.

• Apple Support AU: Using Dual SIM with an eSIM
• Apple Support AU: About mobile data roaming options for your iPhone and iPad
• Google Pixel Help: How to use dual SIMs on your Google Pixel phone
• Google Pixel Help: Connect to mobile networks on a Pixel phone
• Samsung Australia: install a nano-SIM card and eSIM on Galaxy
• Samsung Support: Manage data usage on your Galaxy phone
• Apple: set up eSIM on iPhone
• Google Pixel: set up a new eSIM