The main impediment for consumers trying to switch between various carriers in the United States is typically the ETF (Early Termination Fee). Since most carriers subsidize the cost of a smartphone, leaving the contract early requires the customer to pay... Related StoriesAT&T Expects to Launch LG G Flex in Q1 2014, Price to be Revealed LaterSprint: LG G Flex Will Launch Online on January 31 for $299 on ContractConsumers Can Purchase the $99 Moto G from Verizon Wireless Starting Today