Add the network logo to iPhone.
For those who want to add a network logo or carrier logo in the iPhone . Its can do it by connecting your iPhone to a computer by use the connection program. WinSCP or i-FunBox is connection program for PC with your iPhone . Your network logo must be .png file. You have to put the logo file in the folder / System / Library / Carrier Bundles / Unknown.bundle. Then restart your iPhone. You will have your carrier logo on your iPhone.