I use Thunderbird 91 and
Samsung Galaxy A51 with Android 10.
With the latest update(s) of the Samsung Contact App on Android 10,
you can only display 1000 characters of the notes of each contact.
And even worse:
If you edit on the phone any field of a contact with a note having more than 1000 characters,
the note will be cropped after 1000 characters.
What is the maximum length of contact notes BirdieSync can synch?