Difficult to set up, but worth it - CARSON Universal Optics Adapter

I bought this to help me run the spotting scope for my wife during her long range competitions. Right now, I'm using it with a Leupold spotting scope. It works, after a fashion. The hardest part is carefully setting the spring-loaded (and very well padded) arm & brace arrangement to hold your phone in the exact right spot. There is a trick to this and I recommend finding Carson's YouTube channel as the online tutorials were a great help. The instructions provided are complete, but the videos gave you a lot more information.

Once you have your adapter configured properly to hold your phone, it works like a charm. It is extremely easy to mount & unmount this adapter from my spotting scope. It takes half a second to hang it in place and it doesn't budge once it is attached to the eyepiece. The spring loaded arms on the Carson are strong and I have no concern that my expensive smartphone is going to fall out of its padded grip.

The video image you get is highly dependent upon your phone's camera and the optic you're mounting it to, of course. But I'm quite happy with it so far.