I am Using A8 2018 since march 2018. i am facing a issue while talking over mobile network. the person i am talking to cannot hear me clearly. some time there are a clinching noise. some time it gives a low pitch noise, the voice drops or the voice is very low. if the person is in a noisy place cannot understand what i say.
here is the catch if i talk by any messenger app like whatsapp viber or facebook messenger there are no issue at all.
i have changed my sim and mobile operator between both sim slot in separate case the result is same. my phone does not have any network problem as i can use Mobile data without any issue. i can even call on mobile data using whatsapp or messenger without any interruption. its just when i call over speaker phone using mobile network i am facing this issue.
I am Using Stock Rom no Root
Please suggest me what i can do to get rid of this issue.
Thanks in advance