Nexus 6 radio issue!

Hello Guys , This is my first thread, no service issue,
I have nexus 6 , whenever i boot into Bptools mode , the sim card is working, but when i boot to normal mode , it says no service, when i dial *#*#4636#*#* it says Turn on radio, but i wont able to turn it on, please help me, i also flash different firmwares on it, sorry for bad english