Nuisance calls can make life miserable. Here's how to block unwanted callers' numbers on an iPhone in iOS 7 (which is easy) and in iOS 6 (which is a bit more difficult).Updated 26 September 2013 Nuisance calls can make life miserable; and until very recently the iPhonedidn't offer a straightfoward way to block an incoming number. But that all changed with the introduction of iOS 7. Here's how to block unwanted callers' numbers on an iPhone, whether it's an iPhone 5s, iPhone 5c,iPhone 5,
