Hi @DUDU-Meng ,
so first of all, thanks for the new version of the app (version 2.002028). I installed the new version, and made an app data delete in android settings. It's now partly better, and partly worse than before. 🙂
The attached pictures represents a before/after state, for compare app versions (2.002024 vs 2.002028).
As you can see UTF-8 character support works, at least with Hungarian chars.
But artist and song names are now from filenames and not from ID3 tags (see with red X). Why that change? You should revert it back to ID3 tag!

The ABC ordering of displayed songs is not correct, as you can see on the picture. Please correct this also.

Best regads!
Peter