Many an iPhone owner has a love/hate relationship with their iPhone. In large part this is because generally the iPhone is a masterful device, which ‘just works’ in so many ways, and has so many cool features, that it’s searingly frustrating when something that should be simple – should be so obvious – isn’t. Take, for example, rejecting an incoming call from the iPhone’s lock screen. Just how do you decline a call from the iPhone lock screen? Here’s how.