[eSIM] APN Settings Explained ~ iOS Edition ~

This time, we will explain how to set up the APN in case your eSIM does not work after you purchase it and arrive at your overseas destination

For information on the initial setup procedure (iOS) after purchasing an eSIM, please see the article below

○ [eSIM] Setup Method ~ iOS ~

*Please note that this article is based on iOS 17.5.1 for iPhone 15.

For instructions on how to set up the APN for Android, please see the article below

○ [eSIM] APN Settings Explained ~ Android Edition ~

[eSIM] Explaining APN Settings for Beyond SIM ~ Android ~

What is APN?

APN stands for "Access Point Name" and is an identifier that lets smartphones and tablets know which network to connect to, and it plays a very important role in mobile communications.

The APN settings are generally set automatically (Auto-APN), so in the case of eSIMs, they are usually completed simply by scanning a QR code. Therefore, users rarely have to worry about it

However, due to factors such as the version of the device the user is using and dependencies on the carrier in the country they are traveling to, it may be necessary to manually adjust the APN settings.

Conversely, if there are no other problems or you have no special purpose, be careful not to touch it carelessly and to avoid changing the settings without fully understanding them

General flow of work

There are two main steps to manually setting up the APN:

1. Check the current settings
2. Enter the correct APN value

For the APN value, please refer to the sample "QR code link email" below

Check the current settings

First, tap ① "Settings" > "Mobile communications".

② Select the eSIM for which you want to change the APN

③ Make sure the line is turned on, then tap "Mobile Data Network" in ④

Please check the currently set APN (⑤)

At this time, depending on the version of the device used by the user and the dependency on the telecommunications carrier in the country of travel, in rare cases an unintended APN value may be automatically entered randomly.

In that case, check the APN field in ⑤, delete the unintended APN value, and enter the correct "QR code link email" value mentioned above.

* Conversely, if there are no other problems or you have no special purpose, be careful not to touch it carelessly and to avoid changing settings without fully understanding them

Enter the correct APN value

Tap ① "Settings" > "Mobile Data" again

② Select the eSIM for which you want to change the APN

③ Make sure the line is turned on, then tap "Mobile Data Network" in ④

Enter the correct APN in ⑤ and optionally enter a username in ⑥

*Other than that, you can leave the fields blank

Finally, restart your device to apply the settings and test the connection

Finally

The setup itself is not that complicated; just check the APN listed in the email and enter the value on your iPhone's settings screen

However, if you make a mistake in this setting, you will not be able to communicate with the network, so please be careful when changing the settings

Also, even if you are already able to communicate normally, be careful not to change the settings by mistake