I've had my MAXX for a few days now and I've noticed that when there's someone calling me that's not on my contact list, their caller id still shows up. I've had it from a personal number and a business number. What app or service is doing that?
I had something like that on my Verizon S4 too, but I think it was just a free trial for a paid service. I only had that phone for one day lol.