Mast Mobile acts as a mobile network provider (MVNO), but we've integrated software into the network routing, we can do lots of cool things. The most prominent of these features is that we can provide a different caller id based on who is on the other end. This lets us show, for example, your personal number to friends and relatives, but a work number to your clients. The same architecture also lets our users specify that they aren't receiving work calls at the time, but are receiving personal calls.

All of this is done without the use of an application - you just use your phone as you normally would, and our software keeps track of which number to use for each of your contacts. There are a few companies out there that are attempting to do something similar, but they require that you make some calls using their app, which is not how people are used to using a phone.

We've done this by a series of integrations with different systems that are needed for phone account management, routing phones and billing with an orchestration layer in the middle. We plan on extending this over time so that more integrations are possible in the future.