My friend Sven told me about these types of devices that can interchange data with your mobile device and essentially extend storage. He teaches music and has a large sheet music library that does not comfortably fit into his iPad Mini. These things used to be so expensive. I wanted to try one for my own needs and found this Phicool model and thought an additional 128GB would come in handy. I’m glad I tried it.
The device is size of a wide memory stick, about the size of a mini BIC lighter. There’s a small slider in the middle of the device: press and slide up to reveal the Apple Lightning port, or a full-sized USB port at the other end. The latter can flip up to reveal a micro USB port. Slide it in the middle and both ports are protected on the inside of the stick. Exchanging data is very easy, I’ll talk more about it below.