> > iOS users don't use iMessage since SMS are expensive

> But iMessage is free. It just uses your phone's internet connection, just like Whatsapp

Except when you're sending a message to someone who isn't an iMessage user, or if the "Send as SMS" option is enabled, resulting in what you thought was an iMessage becoming an SMS/MMS.

The blue/green colour difference, as well as the light grey text in the input field, isn't always immediately obvious.

By contrast, Whatsapp is always free. You can't send someone a message on Whatsapp and discover it's gone out as an SMS/MMS after the fact.

That said, I still prefer iMessage personally.

In the US iOS has a 40% market share.

https://www.statista.com/statistics/266572/market-share-held...

But in Mexico it's probably between 10% and 20%. I can't seem to find any recent stats.

Only between Apple devices