Get 4G indicator on Jailbroken iPhone 4/4S which is only 3G
Unlike the AT&T iPhone 4S or those who have iOS 5.1 in their device, other users do not get the 4G indicator. According to the International Telecommunication Union 4G Indicator authenticates the access of true 4G having high speed HSPA+ standard. However, other iPhone 4S users on Verizon or Sprint or the owners of unlocked iPhone 4S can only get 3G indicator.
Non AT&T users also have the option of getting the 4G indicator even if you do not truly have access to 4G. Free WinterBoard modification in Cydia dubbed 4G can get you the indicator for your iPhone 4 or 4S as well.
You would not have 4G in actual but you can make your friends think that you have, so how about it? Get the free WinterBoard modification from ModMyi repository and you are done. Now whenever you are accessing your 3G network, your jailbroken iPhone 4/4S will show the 4G indicator.
So, install the modification and search WinterBoard in your home screen. Now tap on the 4G for iPhone 4 theme. Now you will see a Reprising button in the application. Press the button and changes will be saved on your iPhone automatically to display 4G indicator.