[popcar2]

Nope, which is very bizarre. I don't understand the point of the phone form factor if it doesn't have a SIM card slot. It even has a microphone and everything but you can't make calls from it.

[tired_and_awake]

If you install signal or WhatsApp would it work?

[gs17]

Yes, if you're on Wi-Fi. It's running Android and even comes with the Play Store. I have one of their larger readers and a lot of apps worked out of the boox.

[dingnuts]

not if you don't have a WiFi signal available. The part that makes it a cell phone isn't the ability to run messaging apps, it's the cellular modem.