I don’t know the details but both use services from the carrier. I think google hosts for the carriers but there are checks thats rely on the carrier. If you look at the details for google messages it address specific URLs based on the carrier.

For iPhone its all carrier depend. If the carrier doesn’t support it, iPhone will not have it.

You can probably do some more advance tasks via CLI. Also usually lists information faster. But honestly you will be overall fine with GUI a majority of the time.

Some people just like being in the terminal.

Isn’t matrix more like slack that you are looking for?

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