When your Korea eSIM is switched on but the internet isn't: where to look on iPhone, Galaxy and Pixel

You've landed in Korea, turned off airplane mode, and your map app just spins. Before assuming the eSIM is broken, look at your phone's settings. Kedanto's support page says that when the internet doesn't work, checking data roaming and the data line usually settles it. This post covers the case where the eSIM is already installed but nothing connects. Menu names differ by phone, so iPhone, Galaxy and Pixel each get their own section.

Is the eSIM not installed, or is it just not connecting?

If the travel eSIM appears in your phone's list of lines, it's installed, and the problem is getting it switched on. On iPhone the list is under Settings › Cellular, on Galaxy under Settings › Connections › SIM card manager, and on Pixel under Settings › Network & internet › SIMs. If the line isn't there at all, it's an installation problem. See why to install before you land and Kedanto support. A Kedanto QR code installs only once, so don't delete the line and reinstall it to fix a connection problem.

What order should I check things in?

Check that the line is on, that it's the line your phone uses for data, and that data roaming is on. Kedanto's setup guide gives the same advice when there's no internet: make sure the travel eSIM is selected as your data line and that roaming is on for that line. Apple explains why roaming matters. It says Data Roaming "permits internet access over a cellular data network if you're in a region not covered by your carrier's network" (checked 14 September 2026). If all three are right and it still won't connect, make the phone search for a network again, then power it off and on.

Where are the settings on an iPhone?

On iPhone, all three settings live under Settings › Cellular (Mobile Data on some devices). These are the paths from Apple's support pages (checked 14 September 2026):

1. Turn the line on: in Settings › Cellular, tap the travel line. Apple's page on SOS, No Service or Searching says: "If the cellular line is off, tap Turn On This Line."
2. Choose the data line: Settings › Cellular › Cellular Data, then tap the travel line (Apple's "Using Dual SIM with an eSIM").
3. Turn on data roaming: in Settings › Cellular, turn on Cellular Data, tap the travel line, tap Cellular Data Options, and turn on Data Roaming (Apple's page on cellular data roaming options).
4. Search again: Apple says to turn on Airplane Mode for at least 15 seconds, turn it off, and restart the iPhone if that doesn't help.

You don't need data roaming on your home line. Kedanto's guide says to leave roaming off there, and Apple warns that when you use both lines, "your travel eSIM will be used for data. You might still incur roaming fees from your home eSIM."

Where are the settings on a Samsung Galaxy?

On Galaxy, the line and data choice sit in SIM card manager, and data roaming sits in Mobile networks. These are Samsung UK's paths (checked 14 September 2026). Kedanto's own guide calls the same screen SIM manager, and Samsung Japan notes that on some models Connections is called something else, such as Network & internet.

1. Turn the line on: Settings › Connections › SIM card manager, tap the travel eSIM, and turn its switch on.
2. Choose the data line: in SIM card manager, tap Mobile data and pick the travel eSIM. You can also swipe down to the quick panel and tap Mobile data.
3. Turn on data roaming: Settings › Connections › Mobile networks, then turn on Data Roaming. Samsung says that if the switch is greyed out, check that Mobile data is on. The page doesn't explain how roaming works with two SIMs, so if Mobile networks asks you to pick a SIM, pick the travel eSIM.
4. Restart: Samsung Korea's service page on data connection problems lists restarting first, and Kedanto's guide says a restart fixes most Galaxy cases.

Where are the settings on a Google Pixel?

On Pixel, the line, data and roaming settings are all under Settings › Network & internet › SIMs. These come from Pixel Phone Help (checked 14 September 2026):

1. Turn the line on: tap the carrier name and make sure "Use SIM" is on.
2. Choose the data line: on the SIMs screen, tap Mobile data, pick the travel eSIM, and make sure mobile data is on.
3. Turn on data roaming: turn on Roaming. With more than one SIM, use the tabs at the top to pick the travel eSIM first. Google describes Roaming as letting "your phone send data over other carriers' networks when you leave an area covered by your carrier's networks."
4. Power off and on: make sure airplane mode is off. Then power the phone off, wait 30 seconds and turn it back on. Google's tip is: "Do not select restart." It also offers Settings › Device health & support › Mobile data diagnostics to find the problem automatically.

Should I pick the network manually?

Leave network selection on automatic, and only choose a network by hand if the steps above didn't work. Kedanto's Korea eSIM page says the eSIM connects to the SK Telecom and LG U+ 5G networks. On Pixel, the Network setting under SIMs lets you "pick your network operator from available networks." Samsung UK's page goes as far as turning off Select automatically under Settings › Connections › Mobile networks. We couldn't confirm from official pages how those networks are named in the list. We also found no Apple page describing manual network selection on iPhone, so we've left it out. If choosing manually doesn't help, switch back to automatic.

Do I need to change the APN?

No. Kedanto doesn't give an APN for its Korea plans, so leave the APN alone. As of 14 September 2026, there is no APN value on the Korea product pages, in the setup guide or in the eSIM email. Apple says you can only view or edit the APN "if your carrier allows it," that "incorrect APN settings" can lose you cellular data and add charges, and: "Don't edit the APN unless directed by your carrier." Samsung Japan likewise tells Galaxy users to get APN values from their carrier. If a forum post tells you to change it, email support@kedanto.com before typing anything in.

The internet works, but an app says I'm connecting from abroad. Why?

That's probably how Kedanto's Korea eSIM routes traffic, not a settings problem. Kedanto's Korea page says "your internet traffic exits through Singapore, so some Korean websites and apps may treat you as connecting from abroad." Changing the settings above won't change that. And if it suddenly gets slow in the afternoon on a daily plan, check how much data you've used before touching settings: once the day's data is used up, the plan keeps working at reduced speed.

Nothing works. What should I send support, and can I get a refund?

Get on Wi-Fi and email support@kedanto.com with your order number, your phone model, how far you got in the steps above, and a screenshot of the Cellular (or SIM card manager) screen. Kedanto's support page says requests from travelers who have lost data come first. Refunds follow the refund policy, whose Korean text is the binding version:

• Supplier outage: a partial or full refund once the evidence is checked, whether or not the eSIM was installed or activated.
• Anything else after installation: no refund, even if the eSIM hasn't activated yet.
• Unsupported device or failed install: a full refund only if the eSIM was never installed.

If you haven't bought yet, check your phone model and carrier lock first.

Take the screenshots while you're still on airport or hotel Wi-Fi. Then, while you wait for a reply, you won't have to dig through the same screens again.