U
ulover07
Guest
I have the unlocked version of this phone and I recently had to change carriers, which was from t-mobile to sprint. When I had put my t-mobile sim card in the phone it worked right away. I purchased a nextel sim card and I want to put it in the unlocked 5800 but I don't know how to go about it. When I called sprint they asked me for a serial number. What do I do?, I really like this phone and I want to keep it!!!