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I experienced this issue as well.  Running an Android Samsung phone, on the latest OS available, the call would drop while using the "RC Phone" app.  I could hear the other party, but they could not hear me.

The call would drop for about 5 secs, and then reconnect.  RingOut (using your carrier voice signal) posed no issue. 

This solution, however, was not sustainable. 

** I instead switched to the "RingCentral" unified app (instead of RC Phone), and haven't experienced the issue, since.  I've been using it problem-free for about a month, now.

I have the same issue as well.  Seems like it started about 6 months ago

I have had the same issue - I turned Wifi off, but it still happens sometimes.  Galaxy S9.

Hi, I now have a new Android phone with Android 8, and this is still happening to me on that phone as well as the older Android 6 phone. For example, in a 30 minute telephone conversation, it will usually drop out at least once. Most times its reconnects in about one minute, but sometimes it doesn't. I think, put am not positive, that the other person can hear me, although I can't hear therm.

When that happens (I think), and when I get disconnected for sure (I know), I get an error message at the top of the screen on the app that says something like, "Lost connection to server." I am positive that the connection problem is not related to loss of internet connection on my end, because I am using the app on both of those two Android phones in the office, with the router nearby, and any one or two other internet connections going in room are not interrupted. The "Lost connection to the server" message indicates to me that it is a problem on RingCentral's end.

I'll also mention that this happens on both of the Android phones regardless of whether the phone also has service with a carrier.

I haven't been using the desktop app much because my computer only had 4 GB ram and the app uses way too much memory. But as I recall, I sometimes had the same problem on the desktop app. But now I now have a new computer with 64 GB ram and a super-duper processor so I am going to use that when I can and see what happens.

I am experiencing this exact same thing just as you described it, but I am using the latest mobile app on an Android phone (Android version 6.0.1). With me, it happens on every call, usually more than a few minutes into the call. Like you, I am pretty sure the other party still hears me, but I don't hear them. With me, not just sometimes, but in every case I hear the RingCentral progress tone that plays when an outbound call is trying to be established.

Also like you, it is so bad I avoid using the mobile app for important calls.

Brandon have you found any answers?

Hey Brandon, 

Sorry to hear this is happening! Keep us posted if you find any effective troubleshooting measures. i'll keep an eye out and let you know if anyone else is reporting this kind of experience. I would recommend to open a case with Support as well, just to see if they have any additional information :)