When I saw this I was excited that maybe I could finally switch from Telegram. But no, it's tethered. I don't want to have to always make sure my phone is charged and with signal. I really don't get it. I get they can't do it the telegram way, by storing plaintext on the server. However I don't get why they can't do it like iMessage and encrypt the messages with each registered device's key. Perhaps moxie can explain why they can't do this.
This is what I love about fb messenger over whatsapp. You can use it on your pc even without your cellphone. This dependency on the mobile makes no sense at all. It kills half the usecase.