I am sick and tired of the slow data speeds on Sprint and am thinking of paying the ETF and going to Verizon. Instead of signing up for a contract and getting an S4, I am thinking about trying to find a used S3 or Droid DNA and porting my Sprint number over and signing up. Is that possible? I want to switch to Verizon now, but really don't want to enter into a contract being only 6-8 months away from the S5 or the next HTC.