Comment something is missing (Score 1) 122
"...The devices would also have two phone numbers."
If we talk about GSM, devices have no phone number, SIM card is identified on netwok and associated with a phone number.
Unless the SIM card is dual IMSI, there is only one phone number. As far as I know, a SIM is using only 1 IMSI at the time, something is missing or you'll still have to power off a VM and start the other one...