The iCA will make you unable to use the mute switch. However, you can still mute/unmute your iPhone by using the Assistive Touch. We recommend you using this to mute/unmute your iphone when you have the iCA on.
May. 11, 2016
Status of GIZMON products regarding iPhone SE
Feb. 19, 2014
How to use the Assistive Touch. (To mute your iCA)
Feb. 11, 2014
GIZMON NEW PRODUCT 2014