Hello Friends. I have this problem with iGo Nextgen that seems to be original. The developer who sold me the software says he has no other clients with this issue, and searching on forums I've not encountered this issue.
So I have the iGo Nextgen 9.18.27.719974 installed on a tablet running A10 and a phone running A12. On both devices, almost daily, when in navigation with voice guidance, for no apparent reason the app goes mute. Just the app, nothing different with the device sounds and volumes. And only way to get back the sound is with a restart of the app.
I've tried different apk's of the same software that I downloaded to test and it happens on all of them. Note that the app can go for hours with the sound normal, but eventually in less than an hour or after driving some hours, it eventually goes silent with no warning. Ah, and never in the middle of a sound or instruction. It happens more often on highways when there is little sound output and I've missed a couple of highway exits because of this.
Any help? I must be doing something in the settings that triggers this but can't see what it could be. And can't be that 2 different devices are the problem, unless there's some conflicted app.