eSIM Troubleshooting: Common Problems and How to Fix Them
Travel should feel exciting, not frustrating. But there is nothing more stressful than landing in a new country, switching on your phone, and realising your eSIM is not working.
No data. No maps. No messages. Just that dreaded "No Service" notification.
The good news is this: most eSIM problems are surprisingly common, and even better, most of them are easy to fix in minutes.
In this complete troubleshooting guide, we walk you step-by-step through the most frequent eSIM issues travellers face, including:
eSIM not activating
No signal or data connection
Slow speeds or unreliable coverage
APN and network errors
Device compatibility problems
You will also learn quick fixes that solve the vast majority of issues, often without needing to contact support.
And if you are planning your next trip, we will also show you how to avoid problems entirely by choosing the right setup from the start.
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What to Do First: The 5-Minute eSIM Reset Checklist
Before diving into specific problems, start here. This quick checklist resolves a large number of connection issues straight away:
Turn your phone off and on again
Toggle Airplane Mode on for 30 seconds, then off
Ensure Mobile Data is enabled
Check your eSIM line is switched on
Make sure Data Roaming is enabled (essential when abroad)
These simple steps address temporary glitches, network refresh issues, and configuration delays.
If your eSIM still is not working, keep reading - we will pinpoint the exact problem and fix.
Problem 1: eSIM Won’t Activate
What’s happening?
You have scanned the QR code or installed your eSIM, but it is stuck on "Activating" or failing completely.
Quick fixes
Check your internet connection during activation, you must be connected to Wi-Fi or mobile data
Restart your device after installing the eSIM
Ensure your phone supports eSIM (older models may not)
Make sure your device is carrier unlocked
Why this happens
Activation requires a stable connection to download your eSIM profile. If that process is interrupted, the setup may fail or freeze.
Pro tip: Always install your eSIM before you travel while connected to stable Wi-Fi.
Problem 2: No Signal or "No Service"
What’s happening?
Your eSIM is installed, but you see:
No Service
Searching
Emergency Calls Only
Quick fixes
Turn Data Roaming ON
Manually select a network:
Go to Settings → Mobile Networks → Network Selection
Toggle your eSIM line off and on
Restart your phone
Why this happens
Some devices do not automatically latch onto local networks abroad. Manual selection forces your phone to connect to a compatible carrier.
Stay Connected from Anywhere
Avoid signal issues by choosing a trusted provider with strong international partnerships.
Browse reliable coverage across destinations on /our-destinations page.
Problem 3: Data Not Working (But Signal Is Fine)
What’s happening?
You have signal bars, but:
Web pages will not load
Apps do not connect
Messages aren’t sending
Quick fixes
Check Mobile Data is enabled for your eSIM line
Confirm APN settings are correct
Toggle data off and on
Reset network settings
Why this happens
This is typically a configuration problem rather than a signal issue. The network is reachable, but your device cannot route internet traffic correctly.
Problem 4: Incorrect APN Settings
What is an APN?
APN stands for "Access Point Name". It tells your device how to connect to the internet.
Quick fixes
Go to Mobile Data settings
Select your eSIM
Check APN matches the provider settings
Reset APN to default if unsure
When you need to change it
Not all eSIMs require manual APN setup, but if your data is not working, this is one of the most common causes.
Problem 5: eSIM Not Selected as Data Line
What’s happening?
Your phone is connected, but still using your primary SIM instead of your eSIM.
Quick fixes
Go to Mobile Data settings
Select your eSIM as the default data line
Disable mobile data on your home SIM to avoid accidental roaming charges
Why this matters
If your primary SIM is still active for data, you might:
Use expensive roaming
Experience conflicts between lines
Problem 6: Slow Internet Speeds
What’s happening?
Your eSIM works, but:
Streaming buffers constantly
Maps load slowly
Downloads take forever
Quick fixes
Switch between available networks
Move to a different area
Disable background app usage
Restart your phone
Why this happens
Speed depends on:
Local network quality
Network congestion
Your data plan limits
Problem 7: eSIM Disappeared or Deactivated
What’s happening?
Your eSIM profile is no longer visible on your device.
Quick fixes
Restart your device
Check if the eSIM is still listed in settings
Contact your provider if it has been deleted
Important note
Some eSIMs cannot be reinstalled once removed, so always be careful when deleting profiles.
Problem 8: Device Not Compatible
What’s happening?
You cannot install an eSIM at all.
Quick checks
Confirm your phone supports eSIM
Check regional compatibility (some models differ by region)
Common compatible devices
iPhone XS and newer
Samsung Galaxy S20 and newer
Google Pixel devices (Pixel 3+)
If your device is incompatible, you will need an alternative connectivity option.
Problem 9: Phone Is Carrier Locked
What’s happening?
Your phone cannot connect to another network.
How to check
Try installing a different SIM or eSIM
Contact your carrier to confirm unlock status
Fix
You will need to request an unlock from your network provider.
Problem 10: eSIM Installed but Not Enabled
What’s happening?
The eSIM is installed but turned off.
Quick fix
Go to Settings → Mobile Data
Turn on your eSIM line
It sounds simple, but this is one of the most overlooked issues.
Problem 11: Dual SIM Conflicts
Modern devices often run both a physical SIM and an eSIM at the same time.This can cause:
Data routing conflicts
Signal instability
Incorrect line usage
Fix
Set your eSIM as the primary data line
Keep your home SIM for calls only
Problem 12: Roaming Settings Not Enabled
Some travellers assume roaming should always be off. With eSIMs, this is usually not the case.
Fix
Go to Settings
Enable Data Roaming for your eSIM
Without this, your eSIM may connect to a network but not provide data.
Problem 13: Plan Has Expired or No Data Left
Symptoms
Connection suddenly stops
Apps stop working without warning
Fix
Check your remaining data allowance
Ensure your plan validity has not expired
Problem 14: Network Outages
Sometimes, the problem is not your device.
What to do
Check if others nearby have signal
Try switching networks
Wait for service to resume
Problem 15: QR Code Not Scanning
Quick fixes
Increase screen brightness
Clean your camera lens
Use a different device to display the QR code
Alternatively, enter details manually if supported.
How to Avoid eSIM Problems Before You Travel
Most issues can be prevented with a bit of preparation.
Before you leave
Install your eSIM over Wi-Fi
Test it if possible
Save activation details
Check compatibility
At the airport
Turn on your eSIM after landing
Enable roaming
Connect immediately without searching for Wi-Fi
Compare Plans Before You Fly
Choosing the right plan reduces the chance of issues like slow speeds or limited coverage.
When to Contact Support
You should reach out for help if:
Activation repeatedly fails
Your eSIM disappears permanently
No troubleshooting step works
Having your order details and device model ready will speed things up.
Frequently Asked Questions
Can I reinstall my eSIM?
Only if your provider allows reinstallation. Many eSIMs are single-use.
Should I delete my eSIM after travel?
Only if you are sure you will not need it again.
Why is my eSIM working in one country but not another?
Coverage varies by region and network partnerships.
Final Thoughts
eSIM technology has transformed the way we stay connected while travelling. It is flexible, convenient, and eliminates the need for physical SIM cards.
But like any technology, occasional issues can happen.
The key takeaway is this: almost every eSIM problem has a straightforward fix.
Whether it is enabling roaming, selecting the correct line, or adjusting APN settings, the solutions are usually quick and simple.
With the steps in this guide, you should be able to resolve most problems yourself and get back to enjoying your trip.
Don’t let connectivity issues ruin your trip.
Get a reliable connection from the moment you land.
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