i317 note question
 

unlocked this phone and everything went through w/o error- it reads and dials w an att card no problem-but when put any other card it says "phone not allowed mm 6" or "emergency calls only" is this phone unlocked? i flashed w file on site and rooted for good measure-then unlocked once again=but still cannot use anything but an att card. -thanks

uh... i never encountered such problem...
Maybe your imei is blocked by all other operators... or something...

mm6 error means the phone is blacklisted from ATT, and they have partner with tmobile to block this phone to work on any carrier att or tmobile.

This is what I suspected all along but the customer (who is a dealer) swears the imei is good-says his customer will only be using on at&t-funny part is no mm6 error message on at&t card? So if blocked he will not be able to use on at&t right? I had several hours into the phone and got paid zero so told him if he returns because phone was indeed blocked fee will be double.