richms: The problem with the smart phone software is that if the call never hits the phone, or if you are on a call and it triggers call waiting, it will not happen.

If I am talking to someone I want to, and get "withheld waiting" you can guarentee that I will not put someone I want to be talking to on hold to speak to someone that I probably will just be telling to go away and then hanging up on.

Network side blocking has existed for years on PSTN in the states, is on some mobile networks and is a feature I want to see here. But extend it to all unavailable numbers not just withheld. I am sick of 000000 from telemarketers etc who just hide behind an overseas call center too. All the legit overseas calls come with working ID now, its just the 3rd world call centers that send all zeros so block em too...