Why doesn't my microphone work?

[Taleesha]

Hello,

My microphone isn't working when I call or someone calls me that can not hear me unless I'm on speaker phone also it won't work if I try to record my phone is a lg g vista can u please help me?

[radgatt]

How often do you turn your phone off and back on? How long has this been going on? Did you recently download any apps since this started?