Does WhatsApp work with eSIM?

Yes, WhatsApp works with an eSIM without any changes to your account, since the app is linked to your phone number, not the SIM itself. Switching to an eSIM won’t affect your chats, contacts, or account history.

If you’re wondering, does WhatsApp work with eSIM? The key thing to know is that the eSIM only provides internet access. You can use it for data while keeping your original number active, whether you’re traveling abroad or switching from a physical SIM to an eSIM at home.

How WhatsApp uses your phone number with an eSIM

WhatsApp is linked to the phone number you verified when you first set up the app, not to the SIM or eSIM providing data. When you use an eSIM, it simply supplies the internet connection needed to send messages and make calls, while your number, chats, and contacts remain unchanged. In practice, this means:

Your WhatsApp number stays the same.
The eSIM only supplies mobile data.
No number change or account reset is required.
Works the same way at home or abroad.

Allow WhatsApp to use eSIM mobile data

If WhatsApp only works on Wi-Fi, you may need to allow the app to use mobile data. You can check this setting directly on your device after you set up your eSIM. Follow the steps below depending on your device.

On iPhone

Go to Settings → Cellular or Mobile Service → Scroll down to WhatsApp → Make sure the toggle is ON. Then close and reopen the app to refresh the connection.

On Android

Go to Settings → Connections or Network & Internet → Tap on Data usage → Allowed networks for apps → Select WhatsApp → Enable Mobile data. Open WhatsApp again to apply the change.

Using WhatsApp on dual SIM phones with an eSIM

Dual SIM phones let you use an eSIM for mobile data while keeping your primary SIM active for calls and SMS. This setup works for international travel and for everyday use, such as managing work and personal lines on the same device. With this configuration, you can choose which line provides data without changing your WhatsApp account or losing chats.

Why this setup works well:

Avoid roaming charges by using eSIM data.

Keep your main WhatsApp number for contacts and groups.

Easily switch which SIM is used for mobile data.

To keep WhatsApp working as expected:

Set the eSIM as the line used for mobile data.
If prompted to change your WhatsApp number, always select Keep existing to preserve your chats and contacts.

To keep in mind

If your eSIM is data-only, calls and SMS can continue through your primary SIM. Please note that your mobile operator may apply roaming charges if you’re outside your home country.

Ensure WhatsApp is authorized to use cellular data in your settings, not just Wi-Fi. This is essential when switching lines or using an International eSIM for WhatsApp to maintain a continuous connection.

One WhatsApp number can only be active on one phone at a time. Multi-device is available only through WhatsApp Web or Companion mode.

While WhatsApp is encrypted, access may be limited in some destinations. For more details, see our guide on using WhatsApp for international travel.

Troubleshooting tips

WhatsApp usually continues working with an eSIM without asking you to verify your number again. However, certain situations, such as reinstalling the app, changing devices, performing a factory reset, or completing a major system update, may require a new verification.

If the app requests verification while you are using a data-only plan, follow these steps to keep using WhatsApp with an eSIM without changing your number:

Keep your primary SIM active only while receiving the verification SMS or call, as your mobile operator may charge roaming fees.
If the SMS doesn’t arrive, select the “Call me” option in WhatsApp.
If necessary, temporarily switch mobile data back to your primary SIM to complete the verification.
Once verification is complete, switch mobile data back to your new eSIM and continue using WhatsApp normally.

Holafly Help |

Published: January 28, 2025 | Updated on: February 6, 2026