Mi 11 is currently running on MIUI 12.0.8 version in China. This device has been spotted having the Knuckle screenshot and gesture actions. Here are the Knuckle functions below:
Double-Tap for Screenshot
Draw a ‘Circle’ with a Knuckle for Localized Screenshot(Particular Area)
Draw ‘V’ with Knuckle to perform customized actions as below:
Wake up Xiao AI assistant
Redirect to AliPay, WeChat Payment Code
AliPay, WeChat Scan
You can also long-press and drag across the screen to toggle screen brightness. As mentioned above, Xiaomi hasn’t used this feature after K30S Ultra due to problems with Patent Authorization.
Xiaomi probably will need to pay royalties too and that could be the reason for the delay in expansion across all MIUI devices.
Right now if you live in China, try the feature by navigating to Settings->Additional Settings->Shortcut Gestures. We look forward to Xiaomi finding a way to popularize the Knuckle-based features to other devices in China and maybe to the Global version in the future.