Is anyone else experiencing weird behavior of their iPhone?
I have seen my iPhone doing some very odd things, some are very concerning, some are a nuisance.

Here’s what I have experienced even after doing a reset, powering off and on, doing network reset, reset settings.

1. Calls mute for no apparent reason. I will be on calls, and look down and the call is mute. Usually using the bluetooth, but have also noticed it when using the handset, and speaker.
This settings have been recommended by some users who have experienced these issues.
Go to Settings – Cellular – Enable LTE for Data only if the option is present
Also check Settings – General – Accessibility and see if Noise Cancellation if off
With Verizon using LTE for voice calls, seems to be buggy, but maybe it is something that is being worked on, as LTE for voice calls uses different routing, and if you have the setting off, then calls are routed via 3G.

2. Phone goes dark during calls and cannot be used. Only way is to hit the power button.

3. Making a call, silence, even though call connects. There is silence on the line.

Other users have reported issues with phone doing random activity, without any interaction. Very disturbing with this latest iOS 9.1, seems to be very buggy to say the least.