Hey everyone, I've tried to install makeitmine from Cydia the last couple days and it installs fine but when I go and try to change the carrier name it doesn't work, doesn't matter how many times I try to respring, reboot it won't work. Is anyone having luck with this after 4.2.1 GP JB?? I'm using an iPhone 4. I know I can install fakecarrier but I've heard that because it uses mobile substrate it uses a lot of memory and battery power...can any either confirm this or bust it as a myth?? Thanks.