It is running Android One but it doesn't really get any of the benefits you're supposed to get from Android One like timely updates (Monthly security patches come in a month late), stable software (They released an update which disabled some LTE bands essential to many countries) and even if the hardware fully supports it, they decide to not enable the Camera2 API for some reason. It is way better than my previous phones, though due to being on stock Android.Based on your status bar and the apps on your home screen, I'm gonna guess your phone is running Android One, in which case you're probably better off sticking with the stock ROM until they stop updating it.