OnePlus One sports a 5.5″ 1080×1920 JDI display. It’s powered by a 2.5GHz Qualcomm Snapdragon 801 processor and 3GB of RAM. Storage comes in at either 16GB or 64GB. Other features include a 13MP camera, 3100mAh battery, dual front speakers and StyleSwap replaceable back covers. On the software side, the OnePlus One runs a version of Cyanogenmod with a unique modified user interface.
OnePlus is rolling out another OS update for OnePlus which is Cyanogen OS 12.1. This update will install the build YOG4PAS3JL on OnePlus One. OnePlus has started rolling out the OTA. If you have not received it, you can install it manually. Follow the guide below.