For those of you who have a OnePlus One, Android 9.0 Pie is now available through a custom ROM called PSOP(Potato Open Sauce Project). Now, this ROM has pretty much everything working out of the box including voice calls, 4G LTE, Bluetooth, NFC, etc…etc… Developer says GPS is a bit wonky but seems to work fine for me after using the GPS Fix app on the Play Store. Battery life is excellent(as you will also be able to benefit from Android 9.0 30% improved battery) as the new Android P will prioritize apps and save battery by shutting down apps wasting battery life. Performance is also excellent with Antutu scores of 66,000. For right now, this seems like the best way to experience Android Pie 9.0 on your OnePlus One. I’ve also tested calls both on speakers and bluetooth with my car bluetooth and they seemed to work flawless. While many other Android devices have trouble with bluetooth, OnePlus One does well as it was designed to work well with AOSP(What is AOSP?).