The biggest letdown is the software. ColorOS comes loaded with a significant amount of bloatware, which clutters the interface and is a constant nuisance. Beyond that, the phone suffers from a number of frustrating bugs. The touch response can be unreliable, especially in apps like WhatsApp, and the fingerprint sensor sometimes fails to recognize my finger. The navigation buttons have also been reported to malfunction, which is a basic functionality you expect to work flawlessly.