T-Mobile has been aggressively luring customers by offering to pay ETF (Early Termination Fee) with trade-ins. To strike back and keep the very early-adopter crowd, Verizon has changed its Edge plan for even earlier upgrades at 30 days along with a $100 minimum gift card when you trade in an old device and buy a new 4G LTE smartphone on Verizon's Edge Plus along with free activation.