I have been using this app for years and I love it but lately if I'm on a what's app call and my screen times out, the person I'm speaking to can't hear me. I must keep my screen "on" to be heard. Secondly I would change between my what's app and other apps whilst on a call to get info, if I come off the what's app call screen the same issue as above happens. It wasn't like this before please make sense. We need changes for better not for worst.