Leap Wireless (LEAP +6.4%) and MetroPCS (PCS +3%) have enjoyed much of the cheap smartphone...

|By:, SA News Editor

Leap Wireless (LEAP +6.4%) and MetroPCS (PCS +3%) have enjoyed much of the cheap smartphone pre-paid market, but BTIG believes that could change with the plan America Movil (AMX +3.8%) is expected to offer in the U.S., a SIM card that can be used in any AT&T (T) or T-Mobile phone, including the "the healthy inventory of used iPhones." (AAPL)