https://wccftech.com/oneplus-7-series-received-oxygenos-11-0-3-1-with-bitmoji-support-and-more/

OnePlus has finally started rolling out a new OxygenOS update to OnePlus 7, OnePlus 7 Pro, OnePlus 7T. The latest update is the OxygenOS 11.0.3.1, and it finally brings the hyped Bitmoji feature to the phones and the August 2021 security match.

The most notable change here is the Bitmoji feature, which is already available on the OnePlus 9 series and 8 series. After you update your OnePlus 7 device to the latest OxygenOS 11.0.3.1, you will be able to use the Bitmoji feature. You can find this feature by heading to Settings > Customization > Clock on ambient display > Bitmoji.