Was an issue before this update but when updated the issue fixed a single time then started again.
ISSUE. Unable to log into Microsoft account. Tried for 20mins to do so enjoying the old panoramic. Did so fine first time with new update even though panorama was green & could update downloads. Now unable to load & can enjoy green panoramic shot of happy ghasts. I cant even start a new world or access the settings. When it first happened I thought it was perhaps an issue with the previous update or the One UI 7 update as I hadn't been able to play the game in a couple of weeks. Several attempts over last 4 or 5hrs to load in have failed. No joy even shutting off & restarting phone as a final attempt.
This issue is being tracked at MCPE-218709.