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 One is extremely developer friendly so it becomes easy to create custom ROMs for this phone. There is another official custom ROM available for OnePlus One – Paranoid Android. If you want to install this ROM on OnePlus One, a detailed guide is given below.