On my samsung i had an option under settings to block anonymous calls. I know i can block a contacts phone number on the HTC 10 but i see no option to block anonymous calls? On my samsung you access settings from the dialer , then call blocking and you are presented with the option! Not something i used alot but it can be a very handy feature! Companies calling to ask about surveys etc can be a nuisance and they always ring on private number so blocking anonymous calls was a great way to avoid these calls! Anyone know if its available on the HTC?