Thank you, pardon me for the lack of information, this problem only occurs when i turn the power on and off, everything is fine so i don't think the screen is damaged
I have posted another video to describe the situation, hope to receive your help
Hi guys!
My HWFly v4 OLED have this problem and idk what wrong with it. Everything is okay except this. I hope to get some guidance from you guys
Best regards,
Edit: This problem only occurs when power on/off