I also never used the phone to make any calls before I rooted the phone, but I have ran a recovery back to stock ROM and still nothing. I have spent a lot of time on google searching the issue and everything I came across basically said get a new phone. Although it is annoying as hell, I would like to explore every option of fixing it before I take it back, and I think you guys can help!
Some friends have suggested updating radio's, and trying different ROM's, but to be honest I'm not sure I fully understand how to flash/run other ROM's on my own (my bro did most of the work while I watched) . I did reinstall the kernel I was using (ElementalX something) and reset all my power settings back to stock, but that didn't help any. Sorry for the wall of text but any help will be appreciated. Also, feel free to dumb it down for a HTC noob here
Thanks in advance!
p.s. using the HTC one 5.0 Viper ROM ElementalX kernel