In July 2021, OnePlus released its updated software maintenance program, promising three major Android upgrades and four years of security updates for its flagship devices. However, the new program does not apply to some of its older flagships. According to xda-developers, OnePlus only promises two major operating system upgrades and three years of security updates for the OnePlus 7 series, while the old OnePlus 6 and OnePlus 6T are not even mentioned in the upgrade.
However, OnePlus has recently released a security update for these two models, which includes Android security patches for November 2021 (November and December 1400) and bug fixes. Unfortunately, OnePlus has now confirmed that this is the latest official software update for the OnePlus 6 and OnePlus 6T, and the company will not release any other device updates.
Fortunately, this does not mean that you have to give up the OnePlus 6 and OnePlus 6T now. OnePlus has a strong community of third-party developers in its forums that continue to support two custom RAM-based devices based on the latest version of Android. If you want to use your phone for another year (or two), follow the OnePlus 6 XDA links And OnePlus 6T XDA Go to their forum.