
OnePlus developers continue to improve Android 10 firmware for OnePlus 6 and OnePlus 6T.
What is known
The company released
another test version of the system withcalled OxygenOS Open Beta 4 (aka Open Beta 29/18). The new software contains the December security patch, as well as minor improvements and several innovations. For example, the developers have updated the reading mode, installing a new chromatic effect with smart adjustment of color gamut and saturation. Also in the settings there is now a function to increase and decrease the ringtone for incoming calls and much more.

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When to expect
OxygenOS Open Beta 4 participants will begin to receiveBeta testing programs for firmware in the coming days. If you do not want to wait for the official OTA update, then the system can already be downloaded through the Oxygen Updater application.
Source: Android Police
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