American here: Can someone please explain why WhatsApp is the text message method of choice in your country? What are the benefits vs. a mobile number plan with your device's native messaging app?
American here. Benefits of a chat app like Telegram or WhatsApp (full disclosure, I haven’t used WhatsApp for several years, after migrating to Telegram and Signal. WhatsApp features have changed since I last used it).
1 - Platform agnostic. Doesn’t matter if my friends are on iOS, Android, Windows…
2 - Less/ no degradation of photo and video quality when sending cross platform.
3 - Significantly better management and small and large group chats. Especially when cross-platform.
4 - I can have Telegram/ WhatsApp installed on all my Apple and Windows and Android devices, and everything stays synced. Doesn’t matter which device I’m using, my messages are there.
5 - Not tied to one specific phone number. Easy to migrate to a new phone number whenever I need to, without losing my archived messages.
6 - not tied to cellular service. I frequently travel in areas with no cell service, only WiFi. Largely ameliorated with the improvements in SMS over WiFi.
7 - SIM agnostic. Can use the same chat username across SIMs, especially helpful when traveling internationally and changing SIMs and numbers all the time.
8 - No need to pay outrageous international charges on my primary line to message when traveling internationally. Just grab whatever local, cheap SIM or WiFi service is available.
9 - Better security. I’m not going to pretend that the end to end encryption is perfect, but it is good enough that I’m allowed to send protected information over it, but not over SMS.
10 - Some degree of anonymity. I can set up a chat app with a burner number, then transfer the account to my main phone, which gives a reasonable level of anonymity protection against casual harassment. I’m sure a dedicated person or entity wouldn’t find it too difficult to figure out my identity.
Many of the advanced chat features have been nicely integrated into iMessage and, to some degree, RCS, but all of that goes away when going cross platform.
In a phrase, it just works, and has so for years, while iMessage and RCS keep trying to catch up.
If all you do is send basic text messages, to a small group of personal friends, then there is no need to go outside the native SMS app. If you like to send photos, videos, silly GIFs, have large group chats, travel, and want some anonymity, then you really want to go with a full-featured app.