How do I block someone # from my iPhone
There is no exact way to block a particular number from calling or sending texts for iPhones using. The best way is to use applications such MCleaner or Pysl, you can download these application from the following links www.mcleaner.com/iphone_mcleaner.jsp and www.mac.softpedia.com/get/iPhone-Applications/Tools-Utilities/Pysl.shtml respectively.
Delete there contact number from contacts and it will block them
There is a service AT&T offers for $5 a month that will let you block numbers.
Do you mean how to block someone on Ask?
Call your wireless provider.
Only way with an iPhone is to pay for a service through your phone provider.