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APN Settings for Travel eSIMs: When to Touch Them and When to Leave Them Alone

An APN is a network setting that helps your phone connect to mobile data. Leave it alone unless your SIM Shop setup email or a support reply gives you an exact value to use. First check that the travel eSIM is selected for mobile data, then follow that order’s own roaming instruction.

By Lachlan3 min read

In this guide 5 sections

Narrow it down without resetting the phone

  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 open your SIM Shop setup email.
  2. Confirm the travel eSIM is enabled and selected for mobile data, with automatic data switching off where available.
  3. Apply Data Roaming only if the email says that particular travel line needs it. Keep Australian-SIM roaming off unless intentionally using it.
  4. Only then enter the exact APN from the email or support reply, save it, restart if instructed, and keep a screenshot of the original value.

Set the travel line for data on your phone

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 turn a small fault into a larger one

  • If an eSIM is already installed, do not delete it as a first response. Keep it in place, take a screenshot and make one reversible check at a time.
  • Use only the APN in your own order email or a SIM Shop support reply.
  • Do not reset mobile settings before you have tried these checks and spoken with us.

What to send if the supplied settings still do not work

Email hello@thesimshop.com.au with the order number, country and city, exact phone model, a screenshot of the travel-line settings or error, and the one check you have just completed. Keep the eSIM installed while we look at it.

Sources and checks

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.

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