Question

What's the problem with a smartphones, it auto reboot when it falls down?

Answer 1

Please, let us know what do you mean by falling down. Perhaps, you are unable to turn it off/on, the touch screen is dead and you can`t select an app?

I know that when you accept a major system update or you want to get back to an older version of the operating system, everything is erased or updated, according to your desire

Answer 2

It reboots when it falls down because I think that the battery inside it will fall out when it falls but if that's not the case your phone has a problem.