Case covers part of the microphone so it is hard ...
588334
Case covers part of the microphone so it is hard to hear and also sounds muffled when talking.  Ended up buying a Otterbox to replace it.
1930870
It's pretty I guess but the rubber part occasionally moves out of place and when I record I have to take the case off because it blocks the second mic causing all of this noice in my videos.
3941733
The case I received blocks the bottom microphone port. Case seems good otherwise.
1368398
The case makes it impossible for people to hear you and for you to hear them
2940005
This case makes it hard to connect an auxiliary audio cable to my car radio. I ended up having to get a new case.
900535
After putting this case every time I would call someone they said they had trouble hearing me. I think the plastic around the case covered the mic too much and muffled the sound. I couldn't use it with people constantly asking me "what did you say??" so I switched back to my old phone case
2977349
Good Case only problem is that they made the holes for the speaker in the wrong spot. Your voice is muffled and callers have a hard time hearing you.
533732
Great case for protection. Very common issue is the microphone ports clog up and it's extremely difficult to clean them out. It forces you to remove the phone from the case to make and receive phone calls, yell into the phone to be heard, or use Bluetooth headsets at all times.
1779656
Did not fit all the holes (microphone, noise cancel mic, etc) perfectly.  It was quite protective, but impeding those holes resulted in performance issues.
4150744
This is a 2-peice case, the gold plastic is separate from the green rubber casing.  After taking the case on and off a couple of times the gold plastic part did not fit perfectly on the green rubber casing.  Also, my audio auxiliary cord plug-in would not work with this phone case.
426552
I have an iPhone 5S
Love the style and overall feel of the outer case.
Unfortunately, the microphone areas are 60% covered by the inner soft plastic phone holder and it muffles my voice to where I need to remove phone when on a call.
The inner case has started to warp -obstructing the camera lens; creating a vignette on my pictures.
258864
The case fits the phone and protects the phone. However, the case is bulky and does not allow you to access your headphone jack.
2619494
Covered up the microphone for the phone. Contacted spigen and they said they would send me another, but they never did.
484015
There is no cut out for the microphone. Everyone can hear me way better with the case off. Stay away from this one
4531800
the plastic case that the phone sits in make it extremly hard to turn the volume up or down or turn the phone on or off.
2486988
The phone case has served its purpose, to protect my iPhone. People have complained that they can't hear me very well,and I believe that's because the microphone hole is not very big. It has saved my phone numerous times from a cracked screen. I just wish the microphone hole was bit more opened up.
1559458
The case would be fine but it defeats the purpose to have a case that covers the phones microphone. This case covers the small hole on the bottom of your Samsung note 5 which is used for you to speak into during a phone call. This causes interference so the people you are taking to on your phone will not be able to here you. I thought I had a defected phone but the phone was new so after troubleshooting the phone I discovered  the case was my pdoblem.