Yes — every one of them. They run over the internet, and internet is precisely what the eSIM provides
WhatsApp, Messenger, Telegram, Signal, Viber, FaceTime, Zoom, Google Meet, Teams and Discord all treat mobile data the same way they treat Wi-Fi. Nothing has to be reconfigured, and no account changes.
What Keeps Working
- Messages, photos, voice notes and files
- Voice and video calls
- Group calls and screen sharing
- Your existing account, tied to your own number as always
Your app accounts are registered to your phone number, not to the SIM carrying the data. Switching the data line does not sign you out and does not require reverifying.
What They Cost in Data
| Activity | Roughly |
|---|---|
| Text messages, all day | A few megabytes |
| An hour of voice calling | 20–40 MB |
| An hour of video calling | 250–500 MB |
Video calling is the heaviest thing most travellers do. A daily half-hour video call is a serious share of a small plan — if that is your routine, an Unlimited Plan is the better buy.
Turn off automatic media download in your messaging app before you fly. A busy group chat downloading every photo and video sent to it is a surprisingly large bill against a small plan
