mobile

Hello guys,

I am having an issue with the quality of my calls. I can hear other people fine, but they can barely hear me, it's really quiet or muffled. I cannot pinpoint the source of the issue, and I was wondering if anyone could help out. I am running CM12S Nightlies, Franco kernel, nothing else on top of that I think. I am not sure if the issue is software or hardware related. No physical damage, though I have dropped it a couple of times. I don't know if it's a radio issue either, and I am not sure which one to choose. I am located in New York City and use T-Mobile, would anyone happen to know which radio works effectively there? Are they compatible with CM12? I've done all the research I can but I still can't figure out the why the issue persists. Any help would be appreciated, and if there are any questions, please ask, I'll be happy to provide any additional details that could help resolve this.