why are my messages not posted?

I have two more cases. When making calls and holding the phone to my ear, my screen is not blocked and I turn on various applications with my face. Can you somehow set up a screen lock when talking on the phone? The second thing ... when recording movies, the camera loses focus. Is it normal for thi...

how to do these flashing on my phone? My phone is new and won't I void my warranty by flashing?

I don't understand the word "reflesh"

Przepłukać tzn umyć? Bo nie wiem czy mi dobrze przetłumaczyło

Good day. I have a problem with the BV9900Pro. I bought the phone at the beginning of January 2021, so it is less than a month old. The phone is nice but I'm angry because it isn't working as it should. That's why I bought a new phone for a lot of money to keep it working well. I have the system ver...