OnePlus 6 Open Beta 7.
A new beta has landed for the OnePlus 6.
This one brings some fixes and improvements to telephony and other communications, plus some extra launcher options.
These builds are sometimes not as stable as the official OTAs generally are. Based on my previous experience, the battery life is slightly improved from stable OTAs. However, there was few workaround shared by the OnePlus community where you need to wipe cache either from the Apps Management or from the Recovery Mode.