You can make your smartphone upright for watching videos using an integrated stand in protective case or an individual phone stand such as the following Movie R portable phone stand.
Movie R is a portable phone stand that measures 90 x 52 x 8mm, and designed by Andrea Ponti. As we can see from the images, the phone stand features an elegant and stylish design, and the size of a business card allows you to take the phone stand anywhere with ease. When the phone stand is folded out, the tilted tray and the base is able to hold your iPhone or other smartphone in landscape viewing mode, and you can also adjust the angle for an optimal viewing position. Apart from that, the phone stand is constructed ABS for durability.
At present Movie R phone stand is available on Case Logic in a form of pack. If you’re interested, jump to Case Logic for more details. Additionally, if you need other options, you might like to check Yofo phone stand and more via “phone stand” tag.
Source: Yanko Design