Among other things that are beyond the scope of this post, T-mobile is known for slapping mostly useless, extremely annoying, often intrusive, and always poorly implemented applications onto mobile phones. MobileLife Contacts is, quite possibly, one of the worst I have seen so far in that it is all of the above plus very hard to get rid of. I could go on ranting, but, I guess, you just want to know how to uninstall the "pest".