The legs are very flexible and can be attached to almost anything. I saw some people comment that your device can't be put in a vertical position, but if you get a little creative, you can rotate the legs so that you can. The legs are long enough for it anyway.
Very nice to be able to film like this. It also offers good grip when filming handheld, much nicer to hold than a thin phone. It is a handy little thing that you can easily take with you.
The only downside is that it could support slightly larger devices. The space for your device is not that big, it fits, but there is not much left. Since smartphones are getting bigger these days, I'm not sure whether future devices will still fit.