I went to a mobile phone shop today and had the display of my Huawei P20 Lite (or P Smart) repaired and there were 3 suggestions 1. You change the display for a copy costs 70 euro. 2. You exchange the display for a high copy (or so) 90 euro. 3. Replacing the display with the original display 120 euro. I opted for the 70 euro variant. The seller said that the copy is not as fast as the original. I did not think anything bad and left it there to fix. When I got home, I watched a few videos of people who had 2 different cell phones, one with the original display and one with the copy display. Then I saw clear differences in the brightness which was not very bad. But then I came across a video where a person shows that when she exchanged her phone with a copy display. He said that the battery will not last long. I'm afraid that's how it is with me. And what should I do if that happened?
First, why do not you inquire first?
Second, why are you upset about things that do not exist yet? You do not have the phone back, you can't know if it behaves like anyone claims.
No matter how your phone behaves after receiving back, just book that as an analogous "apprenticeship" and get smarter in the future. Otherwise you will have to pay a lot of apprenticeship.
Health and physical it makes no sense to get upset about something that is not yet known or genuinely present.