7 Common Travel SIM & eSIM Mistakes to Avoid Abroad

Using a travel SIM or eSIM can make your trip more convenient, cost-effective, and stress-free. However, many travellers encounter avoidable issues when using their SIM or eSIM overseas. These problems can lead to frustration, unexpected charges, or a lack of connectivity when you need it most.

At Global Starlink, we help travellers stay connected across the globe. Here are seven common mistakes to avoid when using a travel SIM or eSIM abroad.

1. Not Checking Device Compatibility

Before purchasing a travel SIM or eSIM, ensure your phone is unlocked and supports the technology. For eSIMs, not all devices are compatible, even if they are fairly recent.

Most newer iPhones from the XS model onwards and flagship Android devices support eSIM. If you are unsure, check your phone’s specifications or reach out to us and we will help you confirm.

2. Activating at the Last Minute

It is best to activate and test your SIM or eSIM before your departure or immediately after landing. Many travellers wait until they are already overseas, which can be stressful if data is not working right away.

Activating in advance gives you time to troubleshoot issues such as network selection or APN settings, ensuring a smooth experience once you are on the move.

3. Ignoring APN Settings

If your data is not working after activation, the cause is often incorrect or missing APN (Access Point Name) settings. This is an essential configuration step that some users overlook.

We provide clear APN setup instructions for each plan. Following them carefully ensures that your mobile data works properly while abroad.

4. Choosing the Wrong Data Plan

Selecting a data plan without understanding your usage needs can leave you short on data or spending more than necessary. Consider how you plan to use your device while travelling.

Here is a rough guide to help:

Google Maps: around 5 to 10 MB per hour
Video streaming: 250 to 500 MB per hour
Video calls: 150 to 300 MB per hour

Pick a plan that suits your needs, whether it is just for navigation and messaging or for working remotely and streaming content.

5. Leaving Data Roaming On for Your Primary SIM

If your phone supports dual SIM or you are using an eSIM alongside a physical SIM, be aware that your primary SIM could still use mobile data in the background, resulting in unwanted roaming charges.

To prevent this, make sure to turn off data roaming for your primary SIM and set your travel SIM or eSIM as the default for mobile data.

6. Not Saving Your eSIM QR Code

Once your eSIM is installed, it is easy to forget about the QR code used to activate it. However, if your phone is reset or the eSIM is deleted, you may need the QR code to reinstall it.

We recommend saving the QR code securely, either in cloud storage, as a screenshot saved to your device, or even a printed copy.

7. Assuming All Coverage Is Equal

Even with a global or multi-country plan, network performance can vary by location. Travel SIMs and eSIMs connect to local partner networks, and some perform better than others depending on the region.

When travelling through multiple countries or remote areas, it helps to check which local network your SIM is using and manually select a stronger one if needed. Most phones allow manual network selection through their mobile settings.

Final Thoughts

By avoiding these common mistakes, you can make the most of your travel SIM or eSIM and stay connected with ease throughout your journey. Whether you are travelling for work, study, or leisure, a little preparation can make all the difference.

At Global Star Link, we are committed to helping you stay online wherever you go. For personalised advice or assistance setting up your SIM, get in touch with our support team .