OnePlus has halted the rollout of the OxygenOS 12 software update due to performance complaints from users. The company had only recently started rolling out OxygenOS 12 to the OnePlus 9 and OnePlus 9 Pro, and the update was designed to bring Android 12 to the 2021 flagships. The new version of OxygenOS is built on an integrated codebase with OPPO's ColorOS.
Earlier in 2021, OnePlus announced that it was merging with OPPO, another smartphone brand owned by the same parent company, BBK
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