I started out with the Otterbox on my Samsung Galaxy S7 because it was robust and heavy duty protection. However it did not give good protection to dust due to camera lens and other openings not being sealed.

I then got a Lifeproof case which has a lens cover over the camera and everything else sealed up. I have a charging pad and transfer files via Bluetooth to the computer so I don't have to open the charging port door (a known weakness on the Lifeproof cases)

I've taken the case apart a couple times for a good cleaning and the phone still looks pristine and new inside the case.

Lifeproof Case 

BTW I was able to get he Cam Hi Pro app installed on my Lenova Tablet.

https://talk.newagtalk.com/forums/thread-view.asp?tid=954973