How to leave an iMessage group text on iOS

Noisy iMessage group chat blowing up your phone? In iOS 8 or later, you can leave the chatter behind...in certain circumstances, anyway.
    Related:
  • iOS
  • iPhone
  • Messaging Apps
  • iOS 9
Nick is a freelance contributor and a former editor for TechHive and PCWorld. He likes puns and the color yellow.