Why Is My eSIM Calling Not Working But Data Works?

If your eSIM calling is not working but data works, the most common reason is that many travel eSIM plans are data-only and do not include traditional voice calling or SMS services.

This is one of the most common misunderstandings for new eSIM users. Internet works perfectly, but regular phone calls fail.

Usually, the eSIM is functioning correctly.

The issue is often about plan type, not a broken connection.

You may notice:

• internet works but calls fail
• cannot dial local numbers
• FaceTime / WhatsApp works
• regular phone app says call failed
• main SIM can call but eSIM cannot

This guide explains exactly why your eSIM calling is not working but data works, how to fix it, and the best travel alternatives.

1. Your eSIM Plan Is Data-Only

This is the #1 reason.

Many travel eSIM products are designed for:

• mobile internet
• maps
• rideshare apps
• messaging apps
• video calls via internet apps

They do not always include:

• local phone number
• traditional voice minutes
• SMS sending

2. Data Works = eSIM Is Usually Fine

If browsing and apps work, your eSIM connection is active.

That means the problem is usually service type, not installation.

Helpful guide: Why Is My eSIM Showing Full Signal But No Data?

3. Use Internet Calling Apps Instead

Most travelers now use:

• WhatsApp
• FaceTime Audio
• Telegram Calls
• Messenger Calls
• Skype

These often provide better international calling than old voice roaming.

4. Keep Your Main SIM Active for Calls

Many travelers use this setup:

• Main SIM for calls / OTP texts
• Travel eSIM for data

Important:

• Keep main SIM data roaming OFF
• Use eSIM as mobile data line

Helpful guide: Why Is My eSIM Using My Main SIM Instead?

5. VoLTE / Wi-Fi Calling Settings

If your plan supports voice, calling may fail because VoLTE or Wi-Fi Calling is disabled.

Fix:

• Enable VoLTE if available
• Enable Wi-Fi Calling if supported

6. Wrong Default Voice Line Selected

On dual SIM phones, the phone may try to call using the wrong line.

Fix:

• Select main SIM or supported line for calls

7. Roaming Voice Charges or Blocks

Some home carriers block roaming voice or charge high fees abroad.

Fix:

• Use internet calling apps instead

8. No Signal for Voice but Data Roaming Works

Some partner networks optimize data better than voice services.

Fix:

• Try another carrier manually
• Use LTE

Best Travel Calling Setup

• NoveSIM eSIM for data
• Main SIM for legacy calls if needed
• WhatsApp for most communication
• Wi-Fi Calling ON if supported

How to Fix on iPhone

• Settings > Cellular
• Default Voice Line = preferred SIM
• Cellular Data = eSIM
• Wi-Fi Calling ON if available

How to Fix on Android

• Settings > SIM Manager
• Calls = main SIM or supported line
• Data = eSIM
• VoLTE ON if available

Fast 60-Second Fix Checklist

• Check if plan is data-only
• Use WhatsApp call
• Select correct voice line
• Enable VoLTE
• Keep eSIM for data

Common Traveler Mistakes

Expecting all eSIMs include voice

Many do not.

Turning off the main SIM completely

You may lose calls and OTP texts.

Ignoring app calling options

Usually the best solution.

Using roaming voice unknowingly

Can be expensive.

When to Contact Support

Contact support if:

• your plan explicitly includes calls but they fail
• VoLTE should work but does not
• data also becomes unstable

Helpful page: Contact Support

Final Thoughts

If your eSIM calling is not working but data works, the eSIM is usually functioning normally.

Most travel eSIM plans are data-first products. Use calling apps or keep your main SIM active for traditional calls.

FAQ

Can an eSIM have data but no calls?

Yes. Many travel eSIM plans are data-only.

Can I use WhatsApp calls?

Yes. That is one of the best travel solutions.

Should I keep my main SIM ON?

Often yes, especially for OTP texts and regular calls.

Can I get a local number with eSIM?

Some plans offer numbers, many travel plans do not.

Is my eSIM broken?

No. Usually the plan simply does not include voice calling.