One phone or 2 phones?

[William Huston]

I am learning the ropes still as i scout out brokers to work for and was curious what others do, do you use your personal number for your contact number for the business or do you have a second phone? I have also contemplated just adding google voice to my phone since i already own a local google voice number and using that for the business side, it would make it easier to contact people when your at the computer, you could use a mic and make your calls as well have google hangout open to text or call people when needed.. 

Just wanted to see how others do it?