If you’re looking for a small phone I’d recommend the iPhone SE over it any day of the week. As for something different and stupidly small it’s a neat little thing and it seems to perform pretty well although I’d recommend installing a custom rom and disabling animations etc... if you want it to be speedy, at the end of the day I don’t find Android’s UI/UX overly well thought out and iOS is certainly easier to use on a small screen.