[7] One week after the Oneplus 6 went on sale, OnePlus acknowledged a software bug that caused the device to drop all audio when a phone call was switched to speakerphone.

[8] In November 2021, OnePlus stopped supplying software updates to the operating system.

[15] The first stable version of OxygenOS 9.0 based on Android Pie was released on September 21, 2018.

[17] OnePlus 6 (and 6T alike) has also attracted interests from the Linux communities and FOSS enthusiasts, which worked to port Linux distributions and develop mobile application (including multiple Desktop Environments) to the Phone, including Ubuntu Touch, postmarketOS,[18] Mobian.

[19] and Sailfish OS The OnePlus 6 includes 2 variants for cellular networks worldwide.