For those who already upgraded to Android 11, here are some annoying changes for some apps.
This update focused on "Defaults".
Messaging App uses the default messaging SIM. So if you will use the other SIM for texting, better change it first because your message will be deleted and you will type again. Previously, SIM 1 and SIM 2 is available.
Phone App has the option for call for ask always but previous version is still better for me.
Contacts App doesn't show all contact details if they have multiple numbers and only shows the default number.
For the mean time, I switched to Google Phone and Google Contacts as these were friendlier for now.
