In this demo, I explain and show you how to use this chest mount for your smart phone, in this case my iPhone SE.
Works well with video assistance services.
I tend to use the front camera as when the phone is sitting in the mount, I can still use VoiceOver with the touch screen.
I purchased this Chest Mount from CamGo in Australia, and it was a great purchase for $34.00.
https://www.camgo.com.au/store/p395/Phone-Chest-Mount.html