Solutions to mobile phone echo problems

There are three reasons why mobile phones produce echo. This article will introduce the solutions for you. Design issues of the mobile phone itself

The echo problems caused by the mobile phone itself are mostly due to poor isolation of the transceiver loop and have little to do with the sealing of the fuselage. Mainly because the transmission of electromagnetic waves reaches the mobile phone through various channels, including various reflected or relayed signals. The signal arriving on the first path is the strongest, so the mobile phone always processes this signal. Problems with the operator's core network

There is no psychiatric echo suppression card on the end office circuit board. Problem with mobile phone settings

"Clear Voice" is set, and the receiver and microphone are too close to each other on the same plane. Solution

1. Turn off "Clear Voice"; 2. Enter the "Engineering Mode" of the mobile phone and reduce the "Microphone Gain"; 3. Turn down the volume of the earpiece as low as possible so that you can hear the other party clearly. ; 4. Increase the distance between the mic and the earpiece as much as possible.