The US carrier with the most outspoken CEO is now training its crosshairs on Big Red. After having painted AT&T as its rival and targeting it for most of its marketing campaigns, T-Mobile is now turning its attention to Verizon with a new "Never Settle" campaign. Associations with OnePlus' slogan aside, T-Mobile's proposal to Verizon subscribers is very simple. Try out T-Mobile for two weeks and if you don't like it, just hand back your T-Mobile phone and go back to your old life. If you do want to switch, however, T-Mobile will take care of you.