I unlocked my Sprint Note 3 (SM-N900P), and had it converted to T-Mobile (SM-N900T) and it works fine other than I can't connect to 2g/3g.. I'm geussing it's because my phone is originally a CDMA phone(please respond to that problem as well). But now I that I live up in the North Georgia mountains, the only service that will really work up here on prepaid is Straight Talk. But when I bought the Straight Talk GSM sim card to use with the Note 3, it only works when I travel back 30 Miles to the city and only works on 4G and my internet wants to keep connecting to T-Mobile's internet so I can't use internet whatsoever on my phone. My phone is showing signal for 2/3G GSM but will not allow me to do anything such as make calls, etc. And I also want to fix the network connection problem with the phone only wanting to connect to T-Mobile's network even though I have the correct APN settings for Straight Talk. PLEASE HELP! P.S. I have a custom IMEI due to the fact that the phone was Blacklisted by Sprint because I refused to continue paying for their garbage service, and I don't know if re-flashing the phone will reset my IMEI to the original blacklisted one..