Designed by OnePlus and assembled in China, the OnePlus One is identified as model number A0001.

The One is powered by a custom version of Android, CyanogenMod 11S, created by Cyanogen, Inc.

What's so special about CyanogenMod? It's an open source operating system for smartphones and tablets based on Android. It offers features and options not found in Android versions distributed by mobile vendors.

The OnePlus One is the second phone to come preinstalled with CyanogenMod, the first phone being the OPPO N1 CyanogenMod Edition.

We're pretty excited to see the One has an open source OS and is completely unlocked, both of which protect the rights of consumers.