Tip #3 – Get compact smartphone support. The best I’ve seen are called PopSockets. Roughly the size of a casino chip, a PopSocket has an accordionlike design that allows it to collapse flat or expand out about an inch so it can prop up a phone. (PopSockets also make holding a phone with one hand more secure.) Like the tablet stand, PopSockets come off clean and adhere to most cases, except for some waterproof models and those made of pure silicone.
Source: The Wall Street Journal