I have the IPP 9.7, using the 256 GB wifi + cel. I also have the IPP 9.7 128 wifi only. And the last iOS. I noticed that only in the 256 version the audio is sometimes muted, and for the whole iPAD. I thought at first it was the Earpods that had some sort of issue, then after I restarted the device the sound returned and things were 100% normal. However this isn't the first time something like this has happened. Has anyone noticed this bug in any iPAD, or it's just mine? I believe this isn't some hardware flaw, instead it must be an iOS issue with this specific iPAD model.