Is Resetting And Restoring Your Iphone The Same Thing?

Now this may seem a little stupid, but I need to restore my iphone 4 so I can use a new sim card and I’ve been trying to restore for over an hour and it still says “contacting the iPhone software update server.” But then I noticed that in my phone there is a reset all button.
Is this the same thing as I want to do as a restore? My phone has been backed up today.