Actually doesn't have to be a tripod, you can lean the phone against a wall and start the camera with the Spen. I personally use a little gadget called the Pocket tripod. Very useful and i keep it in my wallet :)
Wow.. Actually I doesnt konw about it. That kind of thing is very useful. Bcz I try to caputure this above 10 times.bcz hand get shake. Finally got it.