Earlier my plan was to mount my Galaxy Nexus 7» tablet on my radio, but I decided that the Nexus7 is too large and heavy for this.
Therefore, I decided to use my Samsun Galaxy S III phone in this project. I have used the same type of back cover so it is simple to add/remove the phone on the radio.
On the back of the Galaxy S III back cover, I have mounted a 433Mhz 3DR telemetry radio module in a small plastic box. Then all you need is a USB OTG cable to connect the 3DR radio to the phone.
Ready to go
Without the phone
From the side - have used an FPV monitor Mount from goodluckbuy, that I have modified
From the rear, showing the 3DR telemetry radio mounted on the backcover.