Your travel eSIM works perfectly in one location, but the moment you move between areas, enter a subway station, or leave a building, your mobile data suddenly stops working.
This issue can happen on the Samsung Galaxy S26 when the phone switches between networks, Wi-Fi connections, or SIM settings while trying to maintain the best signal.
Fortunately, the problem is usually easy to fix.
In most cases, disabling a few automatic network features can make your connection much more stable while traveling.
This guide explains why the problem happens and the exact settings you should change.
Why Does My eSIM Data Keep Dropping?
Several things can cause intermittent data connections when traveling:
1. Switch to Mobile Data Is Enabled
Samsung phones can automatically switch between Wi-Fi and mobile data if they think your connection is weak. This can occasionally interrupt roaming connections.
2. Data Switching Is Turned On
If you're using both your home SIM and a travel eSIM, the phone may attempt to switch between data lines automatically.
3. Weak Signal Areas
Elevators, tunnels, underground stations, and large buildings can temporarily interrupt your connection.
4. Network Congestion
Busy airports, tourist attractions, and city centers can overload local networks, causing temporary data issues.
5. Network Settings Need Refreshing
After moving between countries or networks, your phone may benefit from refreshing its network settings.
How to Fix Samsung S26 eSIM Data Drops
Follow these steps in order.
Step 1: Turn Off Switch to Mobile Data
Open Settings.
Tap Connections.
Select Wi-Fi.
Tap the three-dot menu.
Select Intelligent Wi-Fi.
Turn Switch to Mobile Data OFF.
This prevents the phone from automatically changing connections while you're traveling.
Step 2: Disable Data Switching
Open Settings.
Tap Connections.
Select SIM Manager.
Under Mobile Data, choose your travel eSIM.
Turn Data Switching OFF.
This keeps your phone using a single data line.
Step 3: Verify Your Data Settings
Inside SIM Manager, confirm:
Your travel eSIM is selected for Mobile Data.
Your home SIM is not being used for data abroad.
Data Switching remains disabled.
These settings prevent accidental changes between SIMs.
Step 4: Refresh the Network Connection
Turn Airplane Mode ON.
Wait 30 seconds.
Turn Airplane Mode OFF.
This forces the phone to reconnect to the local network.
Step 5: Clear Carrier Services Data
If problems continue:
Open Settings.
Tap Apps.
Enable Show System Apps.
Open Carrier Services.
Tap Storage.
Select Clear Data.
This does not delete your eSIM or mobile plan.
Why Does the Problem Happen in Tunnels or Elevators?
When you move through areas with poor signal, your phone temporarily loses its connection and must reconnect to the network.
Most of the time, the connection returns automatically within a few seconds.
If it does not reconnect:
Turn Airplane Mode on and off.
Move to an area with a stronger signal.
Wait a minute for the network to re-establish the connection.
Will Turning Off These Features Hurt My Phone?
No.
These settings simply give you more control over how your phone handles network connections while traveling.
You can always turn the features back on when you return home.
When Should You Contact Your eSIM Provider?
Contact your provider if:
Data drops happen constantly.
The problem occurs on multiple networks.
You cannot reconnect after using Airplane Mode.
Other travelers using the same provider report outages.
The provider can confirm whether there are network issues or specific settings required for your destination.
Final Verdict
If your Samsung Galaxy S26 keeps dropping eSIM data while traveling, automatic network features are often the cause.
To improve connection stability:
Turn off Switch to Mobile Data.
Disable Data Switching.
Make sure your travel eSIM is the active data line.
Refresh the connection with Airplane Mode.
Clear Carrier Services data if necessary.
These simple adjustments often provide a more stable mobile data experience while traveling abroad.