Function Brush in Masking - Mobile LR (on Android phone)

Hi @PTDung! Welcome to the community!

Could you share a bit more about the issue you're running into? It would be helpful to know what version of Lightroom Mobile and Android you're using. Also, does the app crash only when you're using masking tools, or does it happen with other tools as well? And does it affect all your photos or just specific ones?

If you're able to share a screen recording showing your workflow, from your edits to the crashing, that would really help us understand the issue better and find a solution more quickly.

Thanks so much
Alek