I have a Galaxy S5 and I want to change the IMEI of it. The current IMEI is blacklisted because the previous owner failed to pay his bill. He also failed to mention that before selling it to me... Nice guy right? So my question is how do I change the IMEI or how do I get it to work with my current network (Metro PCS which is a sister company of T-mobile and uses their network). Any thoughts on this?