If you haven't noticed upgrading iOS on an older iPhone has been downright painful.
Apple software chief Craig Federighi unveiled iOS 12 with the promise of speed boosts for iPhone 6 users. The move is key given that Apple's customer satisfaction rides with old devices as well as the new ones. Apple, like many software developers, is juggling bloated code with maintaining reverse compatibility.
Federighi said that apps launch 40 percent faster with iOS 12 with better keyboard display and faster move into camera.