OnePlus 2 is the 2015 flagship Android device of Chinese upstart OnePlus. It is the successor to the popular OnePlus One. It features a 5.5″ 1080p LTPS LCD display, 1.8GHz octa-core Qualcomm Snapdragon 810 processor, 4GB of RAM and a 3300mAh battery. Internal storage comes in at either 16GB or 64GB. The rear camera has a 13MP sensor and is capable of 4K video recording at 30fps, while the front camera has a 5MP sensor and can record 1080p video.
OnePlus have started seeding out Oxygen OS 3.0.2 update for OnePlus 2. It will update OnePlus 2 to Android 6.0.1 Marshmallow. Not all the users have received it yet. If you are one of them, you can install it manually. Follow the guide below.