eSIM Not Working in Greece? Complete Troubleshooting Guide

Your Greece eSIM should normally connect automatically after you arrive, but sometimes mobile data may not start immediately. The good news is that most problems can be solved in just a few minutes by checking a few simple settings.

Whether you have just landed in Athens, arrived on Santorini, Mykonos, Crete, Rhodes, Corfu, Zakynthos or another Greek island, this guide will help you identify and solve the most common Greece eSIM issues.

Quick answer: most connection problems are caused by one of these settings:

• Data Roaming is disabled.
• The eSIM is not selected for Mobile Data.
• The APN is incorrect.
• The phone needs to reconnect to the network.
• The user is still outside Greece.

Step 1: Are You Already in Greece?

Most Greece travel eSIMs only connect after you arrive in Greece.

If you installed the eSIM before departure and you are still in another country, it is completely normal if the eSIM shows:

• No Service
• Searching…
• No Signal
• Inactive connection

Once you arrive in Greece and turn on the eSIM correctly, it should connect to a supported local network automatically.

Step 2: Make Sure the Greece eSIM Is Turned On

Open your phone settings and verify that the travel eSIM is enabled.

iPhone

1. Settings
2. Cellular
3. Select your Greece eSIM
4. Turn the line ON

Android

1. Settings
2. Network & Internet or Connections
3. SIM Manager
4. Enable your Greece eSIM

Step 3: Select the eSIM for Mobile Data

This is probably the most common reason why mobile internet does not work.

Your phone may still be using your primary SIM for data instead of the Greece eSIM.

Setting	Correct Value
Mobile Data	Greece eSIM
Calls	Primary SIM (optional)
SMS	Primary SIM (optional)

Step 4: Turn On Data Roaming

Many travelers believe roaming should always stay off.

For travel eSIMs this is different.

Data Roaming must be ON for your Greece eSIM.

At the same time, keep Data Roaming OFF on your primary SIM if you want to avoid roaming charges from your home carrier.

Step 5: Check Your APN

Normally APN settings are configured automatically.

If mobile data still doesn’t work, verify your APN.

Setting	Value
APN	data.esim
Username	Leave empty
Password	Leave empty

Step 6: Restart Your Phone

A restart forces your phone to reconnect to the local mobile network.

Many connection issues disappear immediately after restarting.

Step 7: Use Airplane Mode

1. Enable Airplane Mode.
2. Wait about 30 seconds.
3. Disable Airplane Mode.
4. Wait a minute for the phone to reconnect.

Step 8: Check Automatic Network Selection

Keep network selection set to Automatic.

Your Greece eSIM will connect to one of the supported partner networks.

Only change to manual network selection if customer support specifically asks you to do so.

Common Greece eSIM Problems

I Have Signal but No Internet

• Select the Greece eSIM for Mobile Data.
• Enable Data Roaming.
• Verify APN data.esim.
• Restart the device.

No Signal

• Confirm you are in Greece.
• Turn on the eSIM.
• Enable Automatic Network Selection.
• Restart the phone.
• Wait a few minutes after landing.

eSIM Shows “Searching”

This is normal immediately after landing.

Wait several minutes while your phone registers on the local network.

Slow Internet

Internet speeds can temporarily decrease in busy tourist destinations during summer, including:

• Santorini
• Mykonos
• Athens city center
• Popular beaches
• Large ferry terminals

This usually improves automatically.

No Internet on Greek Ferries

This is completely normal.

Mobile networks work best close to land.

During longer ferry crossings, especially in the middle of the Aegean Sea, signal may disappear temporarily until the ferry approaches another island.

Recommended Greece eSIM Settings

Setting	Recommended Value
Mobile Data	Greece eSIM
Data Roaming	ON
APN	data.esim
Automatic Network Selection	ON
Primary SIM Roaming	OFF
Automatic Data Switching	OFF

Still Not Working?

If you’ve completed all troubleshooting steps and your Greece eSIM still doesn’t work, collect the following information before contacting support:

• Your phone model.
• Your current location.
• A screenshot of your Cellular or Mobile Network settings.
• A screenshot showing the selected Mobile Data line.
• A screenshot of your APN settings.
• Your order number.

This helps support identify the issue much faster.

Common Mistakes

• Installing the eSIM without WiFi.
• Leaving Mobile Data assigned to the primary SIM.
• Data Roaming disabled.
• Incorrect APN.
• Deleting the eSIM.
• Trying to reinstall the same QR code.
• Expecting mobile coverage in the middle of the sea.

Related Greece Guides

• Greece eSIM
• Install Greece eSIM
• How to Activate Greece eSIM
• How to Use eSIM in Greece
• APN Settings Greece eSIM
• Greece eSIM iPhone
• Greece eSIM Android
• Does My Phone Support eSIM Greece?

FAQ: Greece eSIM Not Working

Why isn’t my Greece eSIM working?

The most common causes are Data Roaming being disabled, the wrong SIM selected for mobile data, an incorrect APN or trying to use the eSIM before arriving in Greece.

Should Data Roaming be ON?

Yes. Data Roaming should be enabled for the Greece eSIM while remaining disabled on your primary SIM if you want to avoid roaming charges.

What APN should I use?

If manual configuration is required, use APN data.esim.

Why do I have signal but no internet?

Usually because Mobile Data is still assigned to your primary SIM or the APN is incorrect.

Why doesn’t my eSIM work on the ferry?

Mobile coverage can temporarily disappear during offshore ferry crossings. Service normally returns when the ferry approaches land.

Can I reinstall my eSIM?

No. Most travel eSIM QR codes can only be installed once. Do not delete the eSIM unless instructed by support.

Will restarting my phone help?

Yes. Restarting the phone or enabling Airplane Mode for 30 seconds often resolves temporary network registration issues.

Final Recommendation

Most Greece eSIM problems are solved by enabling Data Roaming, selecting the Greece eSIM for Mobile Data, verifying the APN is set to data.esim, restarting the phone and allowing automatic network selection.

If the issue continues after completing every step in this guide, contact support with screenshots of your settings and your order number so the problem can be diagnosed quickly.

Browse Greece eSIM plans here.