How to fix Acer Liquid Zest Plus speaker problem?

i have the Acer liquid zest plus.  when i make calls or someone calls me they cannot hear me.  i have to put them on speaker phone to talk.  How do i fix this?  or should i just return it?




Did the phone ever got wet? My friend experienced this in the past and it's because he got his phone wet. Check out the mic, make sure it is clean and nothing is clogged in there.



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