I have read the messages on my mobile phone. Why are there unread messages on Huawei bracelet 3?

If you use a mobile phone with EMUI8.0 or below to connect the bracelet, the bracelet only supports simultaneous deletion of WeChat, SMS and QQ, and other message types can be deleted on the bracelet. When reading a single message, swipe the screen to the right to delete it. When there are multiple messages, slide the screen up and down to enter the message center, and click the "Clear All" button to delete them. Mobile phone connection bracelets with EMUI8. 1 and above support simultaneous deletion of all messages.