Before I got Android, I never got a single spam call or text besides an attempted premium message. Now I get constant calls from 877-x 800-x or 866-x numbers. I have call blocker, and I don't really get bothered by them much since it gets blocked. But I wonder if I can prevent this in some way. I hate how they have to access my number and stuff to work, is there something that can block them from ever getting my private info?