It has blocked 3 calls that may have been SCAMs, however T-Mobile or Sprint do not know every SCAMMER/SPAMMER’s number so I continue to get calls I do not want. I just continue to use the Apple built in process of blocking them, which is actually more than I can do with your app. I have had to add a lot of my local contacts to your app so that it would not block them, which is also a big difference between your app and AT&T. From what I have seen of this app I would diffidently not pay anything for it. AT&T’s app actually allowed you to manually block numbers and a handful of their categories, which was really useful. Due to being able to see it being useful I did purchase it to get the rest of the categories. T-Mobile’s app; not even thinking about buying it.