Some iPhone models are being plagued by touchscreen issues under Apple’s newest iOS 15 firmware. The problem, which seems to affect iPhone 13 owners most, causes devices to not respond to touch inputs.
A restart temporarily fixes the issue, though it does appear to resurface again soon after. Some say that repeated touches can get the screen working normally again, though.
September 12, 2012: Apple introduces the iPhone 5, with a super-slim form factor that makes it the thinnest smartphone in the world.