no coverage not data "no service"

Hello !! I have problems with my Xiaomi Redmi Note 3 Pro. I do not have mobile network service. I have tried with roms, custom roms, confuguring the card, changing the card, changing the place card in the tray, the phone has both IMEI, correct APN, etc. It has to be a motherboard. Thank you very much !! sorry for my English.