r/GalaxyNote8

I've had it for six years and never had this happen before. Today, it started turning off by itself at completely random times, just instantly going black. If I turn it back on, it turns on normally, and the battery still has the same charge as before it turned off. There was no overheating either. It was 16 Celsius outside... I didn't do any complex tasks, just browsing and making calls. It's certainly old, and the screen has turned pink, but it still worked fine. The only thing I was missing was memory, but I recently cleaned it up.