I bought myself a Galaxy M31s and this is its 4th day. I am having this issue since I have bought the phone. A couple of hours after I open my phone it starts lagging on screen animations (opening a new app or changing between apps). There is no problem in apps or games, its just when I transitioning between them. If I restart the phone, it goes away but after a while it comes back.
Here is what I've tried;
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