gt-i9505 3g problem

hello guys i have gt-i9505 on my hands i have succesfully repair imei and got signal but it’s only EDGE 2g
3g not working i have tried many times :
write QCN
write NVM from the sticky thread
multi samsung tool versions
multi firmwares 4.4.2 and 5.0.1
rooted
multi modems
used repair network via BST
deff. IMEI’S
BUT THE SAME PROBLEM ONLY EDGE INTERNET
I NEED YOUR URGENT HELP