With global smartphone sales decidedly flat, how can companies push new device sales? As expected, Samsung is following in Apple's footsteps by launching an upgrade program that will motivate users to get fresh models. According to Reuters, customers in South Korea who purchase the Galaxy S7 or S7 Edge phones have the option to sign up for the 24 month plan and pay 7,700 won ($6.35) on top of the cost of the phone. Like the program that went live in the UK last week, customers can turn in the device and get the Galaxy S8 or whatever the latest model is.