Why is my Samsung S4 Mini having call distortion on 3G network?

My samsung S4 Mini gt-9190 is settled with GSM/WCDMA networks but when I receive o make a phone call when the netwok is in 3G mode people can't hear me but on 2G can. I don't want to keep switching networks to speak or use fast internet connections. Help!!

Hi Maria. It probably is an issue with your network. Contact your carrier to report the issue so they can do something about it.

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