For the money, this is a decent phone holder, but you may also want to invest a little more elsewhere to get something of more quality.
Two big complaints. First one: the sticky part doesn't stick very well. I cleaned off my dash board and then applied the sticky base, but it fell off a few hours later before I'd ever even tried it with the phone. Not that big a deal: some super glue, and I'm in business. But be aware that's a flaw.
The other flaw is that the actual phone-holder part isn't terrible secure. It does hold the phone, and my phone hasn't fallen; it just doesn't feel terribly secure.
That said, it _is_ holding my phone. There are numerous adjustable components; the arm folds and telescopes, and the pincers and rest for the phone proper are adjustable for different sizes, and there's room to plug in the charger. And, once I super-glued it, it is holding my phone. It also has the vent-clip, if you prefer using that to the arm mount.
Long and short, this is a good-enough phone holder. It's not going to wow you; if you want wow, look elsewhere. But if you want a cheap, sufficient option for your phone, you've found it.