Oneplus 2 was the first Oneplus device that I had hands on experience with. I bought it almost 2 or 3 months after its launch on Amazon.in website.
I’m now using the Oneplus 3 but still have the Oneplus 2 as a back up device. It still works smooth without any issues. The camera, battery, screen, processor, ram, all are working fine. The battery life has gone down a little after the update of OS from Lollipop to Marshmallow but still is decent.
Overall, this is a high quality product offered by Oneplus.