Weird J7 2016 Problem

I have a Samsung J7 2016 J710MN, 8.1 BIT 4, stock, no root, original imei, knox 0, all original, when i put the phone in lte i can use internet but cant make nor receive calls. If i put it in wcdma, internet is also lost, in gsm all works, so in summary, seems like 3g/wcdma is the problem. Anyone had this problem and know of a solution?
Installed versions are:
AP: j710mnubu4crl2
CP: j710mnubu4crl2
CSC: j710mnpsn4crl1