Ask HN: Are there any 4g/LTE dumb phones?

Are there any 4g/LTE dumb phones?

I've recently gone back from smartphones (Note 7 and iPhone 5) to my Nokia 6310i and have found it to be a very good move.

The only thing I'd like more than my 6310i is a 6310i which I can use as an LTE modem - either via Wifi, Bluetooth or USBnet but not RS232 (115200 is a bit slow).

Does anyone make such a phone? (Googling for LTE dumbphone does not turn up much.)

Two weeks+ on standby is the essential feature of the 6310i.