How to change the carrier logo on an iPhone 5?

How do you change the carrier logo on an iPhone 5? I want to change the T-Mobile logo to something else. I don't want to jailbreak it and I tried Custom Carrier but didn't find a USA T-Mobile.

Pretty hard to do without jailbreaking. You can try. Best luck.
http://ios.wonderhowto.com/how-to/trick-out-your-iphones-status-bar-by-replacing-carrier-name-with-custom-logos-text-0150274/

Can't do that.