Mast Raises $7M for a Phone Featuring Separate Work and Personal Numbers

So, a dialer app with better dual sim features, some of them cloud powered?

Wow, I worked in mobile telecom billing in the early 2000s and we were talking about doing stuff like this back then. I'm surprised this might finally become reality over a decade later. Then again, we were saying that mobile payment would soon be mainstream in the USA back then, too. :/

You can do some pretty cool stuff when you're an MVNO. No need for custom dialers (which wouldn't be much fun on iOS anyways).

The system uses inbound calls, calling history and contacts to learn how to handle outbound call. User preferences control the defaults.

Get a call from Fred on the first number, all calls to Fred will use that number. Make a call to Mary with the second number, future calls to Mary will use the second number.

Throw in multiple sets of contacts from your work and personal email accounts and it's going to be pretty smooth.

Full disclosure: the co-founder is a friend. I have no involvement in Mast though.

Google voice could have done this if they would just separate their UI by #.

Currently when you switch phone numbers, if you receive a text to number A and reply when logged in as "Number B" -- you send as Number B.

See CellRox (http://www.cellrox.com/) they created a phone w/ separate numbers and virtualization enforced separation with easy switching between the two environments.