I have a nikon d3300 for the gorillapod 3k kit. I want to be able to mount mobile on it as well. What do i need. I cannot seem to find any clear instructions
The screw on top of tripods that attaches to cameras is a standard size: 1/4-20 UNC. See: Is there a standard tripod mount?
What you need is a phone tripod mount that has the standard 1/4-20 hole to receive the tripod's screw. You don't need to worry about specifying the screw size — it's a standard. If you find a phone tripod mount with a threaded hole in the bottom (almost all of them have one—it wouldn't be a tripod adapter without it, after all), it will mount on the Gorillapod's base plate.