Never happened to me even though I changed the batteries like over 10 times already. I suggest changing the batteries with a high-quality brand ones. It might be expensive but it really is worth it. And try to avoid those cheap batteries from a dollar store or something. They're really bad
If that doesn't work, you may have a big problem here. Have you ever dropped it? Bumped it to a hard surface? Any incidents like that? It might have messed up the motherboard or something. I don't suggest this but if the battery thing doesn't work, you may have to open the back of your P's because it might be broken or there are broken wires and stuff.
It looks like the batteries are too weak for the display.
The manual always suggests using alkaline batteries; not just any ordinary kind of batteries. Avoid mixing old and new ones as well.
Hi, thank you for your replies!
I just changed the batteries to another brand, although the ones I was already using were the ones that came with the package and were also alkaline. I don't mix new batteries with old ones either. The display still lightly flickers sometimes but it's not as bad as before, kind of like the first day after I received it (it kept getting worse over a couple weeks). Let's see if it keeps behaving like this...
I have never dropped it as I treat it with great care and it's been roughly two weeks only since I got it in the mail. Maybe it was bumped against something in its way to deliver, but I don't think it could have been that bad because it was pretty well-secured inside the package so I don't understand at all why this could have happened.
If the problems appear again I might consider opening and repairing it, but since I don't really know how motherboards work if I can't find any tutorials on this I don't think I'll be able to fix anything by myself if I need to.