[Q] Weird problem with my tmobile galaxy note 2 topic

I bought a T-mobile galaxy note 2 last year and so it had been the best phone for me. But a month ago, when I call someone or someone call me, I can hear them but they cant here me when I talk. Only when I turn the speaker on, they can hear me perfectly. I used Jedi rom but after this I return to rom stock 4,3 Basband T889UVUCMK7. Sorry for bad English cuz its not my mother language.