Echo problems on simB to Cect T689
 

I change the value of microphone from 80 to 130 because the other person didn't here me. I've done this from engineer mode *#3646633# but now i have problems with echo. Please help to rezolve this problem. Thank you.

Decrease ic gain from 130.and see mic is properly adjusted to hole on mobile case.and also try to decrease volume of speaker.

Thank's baldev . One more question .Echo loop from factory settings(*#66*#) means what? I can set on or off wich is the best solution ????

help
 

i also have this problem, what do you have to do to solve echo problem on simB??? simA dosen't have this problem

My CECT T689 screen turn on and off (4 sec on, network found, turn off emidiately, than thurned on, searching network, found network, screen thurned off; Pls help!!!!!!!!!!!!