Default [Q] signal radio problem

got a samsung galaxy s4 i545 on 4.3 mk2 awhile ago i had a problem and had to do a restore inside the engineering service menu to fix the spc not working at all now the radio isn't working must be hardware settings already did restores and even verizon repair tool still no signal did the
utms/commom/nv_rebuild restore backup before to fix spc problem. any ideas be nice otherwise its a costly ipod now can't call out at all.