Can I use WhatsApp with a travel eSIM?
Quick answer
Yes. WhatsApp keeps your own number and works on the eSIM's data. Messages, voice and video calls all work, and you do not need to change anything in WhatsApp.
Why it just works
WhatsApp is linked to your phone number, but it sends everything over the internet. With the Olysim eSIM giving you data, WhatsApp works as it does at home.
Things to avoid
- Do not reinstall WhatsApp abroad, and do not change your number in it. It would ask for a code by SMS on your home number, which may not reach you.
- Video calls use more data. A 10-minute video call can use around 50 to 100 MB.
Common questions
Will my WhatsApp number change to a foreign one?
No. A data-only eSIM has no number of its own, so WhatsApp stays on your number.
Do WhatsApp calls cost extra?
No. They use your plan's data, nothing else.
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