Jimiest wrote:

I´ve the same issue... mainly in Whatsapp video calls and sometimes also in normal calls

Not alone... Sorry

Sorry, but not convinced by your argument.
I would even be thinking about a conception mistake...

And furthermore, the echo is not always present, it depends on the caller, not logical if it's "physical problem".

Looks more like a software issue...

Yes , it's right just near to the microphone...
So the echo should be louder...

Thanks for your reply...

So how do you explain that when you put external speaker mode on, there is no echo despite the fact that it's more powerful than ear speaker ??

Hi,

Confirmed: when I put the volume lower (it was max level), the echo disappears...
Could you solve it for next upgrade ? 

thanks a lot

I'll try

thanks anyway 

I have read on other forum than there a question of CSC.

It could be possible to modify it on a rooted phone...

Could you make it VoLTE compatible for the next update ??

Regards

My callers still hear echo on normal calls, and at different places, so it shouldn't be an antenna issue...