Restoring iphone what happens exactly

[creativeboy]

Could someone describe what exactly happens when this happens?

 

[bmacir]

Could someone describe what exactly happens when this happens?

It restores your iPhone to factory settings .... what exactly you want to know, could you elaborate?

 

[jmann]

All of the contents on the phone are erased, and the operating system is reinstalled.You can do a more thorough restore by putting it into DFU or recovery mode first.