Echo problem for the person who I am talking with while making voip call

[siyafkhan]

Hi,
I am using LG G2 (D802 32 gb 4G) made in Korea and whenever i talk to people using different VoIP software, they complain about echo .. (they are listening their sound). When i called from these same software from my friends' phone there is no problem at all.. So, its only with my mobile. When i use ear phone its fine, no echo.. only it comes when i use without ear phone. And also i found two VoIP software without this issue . those works perfectly. but most VoIP have this issue, which works perfectly on other phones.. So, please someone tell me that why this problem and how to solve it ..... Thanks in advance...

 

[Rukbat]

The mic is picking up sound from the speaker. It's a problem of acoustic design (it took Bell Labs about 5 years to design the G handset), and a few very sophisticated apps solve it in software. The only thing you can do is use the VoIP software that doesn't have an echo.