Yes — it can. Activating an eSIM does not automatically disable roaming on your normal SIM.
Many travelers assume that once they install a travel eSIM, their regular SIM stops using roaming. In reality, your phone settings and carrier behavior still matter.
This is one of the most important things to understand before traveling abroad.
Quick answer: Yes. Your normal SIM may still use roaming for calls, SMS, voicemail, or mobile data unless you configure your phone settings correctly.
Why this happens
On dual SIM phones, each line can have separate roles.
- eSIM may be selected for mobile data
- normal SIM may remain active for calls
- normal SIM may still connect to foreign networks
- carrier roaming charges may still apply
Helpful guide: Can I Use eSIM for Data Only and Keep My Number?
When roaming charges may still happen
Calls on your normal SIM
Incoming or outgoing calls can still involve roaming charges depending on your carrier.
SMS or voicemail activity
Some carriers may charge for certain messaging or voicemail behavior abroad.
Wrong mobile data line selected
If your home SIM is still selected for data, your phone may use expensive roaming instead of the eSIM.
How to avoid roaming charges
- set the eSIM as your mobile data line
- disable data roaming on your normal SIM
- keep normal SIM only for calls or SMS if needed
- check carrier roaming terms before departure
Helpful reading:
- How to Avoid Roaming Charges Using eSIM
- eSIM vs Roaming
- Do I Need to Turn Off My Primary SIM When Using eSIM?
Should I turn off my normal SIM completely?
Not always.
Many travelers keep their normal SIM active for calls, banking texts, or verification messages.
Helpful guides:
Common mistakes to avoid
Assuming eSIM disables roaming automatically
It usually does not.
Leaving home SIM as data line
This can create surprise charges.
Never checking settings after landing
Always confirm which SIM is used for mobile data.
Best travel setup
- travel eSIM for data
- normal SIM for calls or SMS only
- data roaming off on primary SIM
Check if your phone supports this setup on Compatible Devices.
Final thoughts
Yes, your normal SIM may still use roaming while an eSIM is active. The safest option is to configure your phone before departure and make sure the eSIM handles your data connection.
Next step: Browse travel eSIM plans and set your eSIM as the mobile data line before your trip.
FAQ
Will my normal SIM still roam while using eSIM?
Yes, it can, depending on your settings and carrier.
Does eSIM automatically stop roaming?
No. You usually need to adjust settings manually.
How do I avoid roaming charges with eSIM?
Use the eSIM for data and disable roaming on your normal SIM.
Can I keep my normal SIM active while traveling?
Yes. Many travelers keep it active for calls or SMS.