How to turn off the echo cancellation of oppo mobile phone?

When we are on the phone, we often hear echoes, so many friends have set echo cancellation, so how to turn off the echo cancellation of oppo mobile phones? Let's take a look at it ~ How to turn off the echo cancellation of OPPO mobile phone?

oppo phones have no echo cancellation function, so they can't be set or turned off, and the call echo is generally caused by network reasons.

Reasons for echo in a call:

Echo in a call means that you can hear your own voice in the receiver during a call, which is generally caused by network reasons, and the fault of the other party's mobile phone or telephone or local machine may also cause echo.

because electromagnetic waves reach the mobile phone through many ways, including various reflected or transit signals. Because the first path reaches the strongest signal, the mobile phone always processes this signal.

The mobile phone will eliminate the delayed signals that arrive at the mobile phone through other paths through a certain algorithm. However, sometimes there are many reflected paths and the signals are strong, so it is difficult for the mobile phone to eliminate them through a fixed algorithm, thus forming an echo.

note: this article is applicable to OPPO A8 phone ColorOS 7 system.

taking OPPO A8 as an example, this paper applies to ColorOS 7 system.