Yeah, it attaches to the phone using usb C. I think when I bought mine, the ones that had a built-in display cost at least $100 and this cost $40. I haven't had trouble dropping my phone with it.
It was also pretty useful when I was trying to get more control wires through my lathe. For whatever reason, they took a very difficult path through the lathe to the front panel. Although in the end, I used the shopvac/string method. At least I knew what I was up against.