Hey guys, using iPhone 6 Plus and updated to 9.2.1. I found out that people can't hear my voice thru voice call. They said my voice too soft to listen. Whatsapp voice message is no problem.

At first, the voice memo also can't record my voice. After I reset all the setting, voice memo become good again. But phone call still the same problem. It look like somethings has covered the microphone. If call using loud speaker got no problem.

I found this problem after updated to 9.2.1. At first, I thought it was line problem. Seem like is the other way round. Anyone got such a problem??