how long can the iPhone 7 run without overheating?

Loukasj wrote:

I have the display setting set to not turn the phone of automatically. I'm just wondering if it will overheat

I wouldn't worry about it. Unless the power management and thermal sensors are malfunctioning, it won't overheat. An iPhone rarely uses enough power to get even close. The biggest risk of overheating comes from leaving one in a hot car, and it will literally prevent operation until it has cooled down

Why do you think it would overheat?