Error 4013 bootloop on iPhone X

If the Apple logo during the start keeps coming off and on constantly, the short answer is, you probably cannot do anything about it, because it is likely the mainboard issue. You are stuck with a motherboard replacement cost of about $750 CAD (I'm Canadian) as Apple doesn't take ownership when its devices fail after the warranty period.

I had had an issue with my MacBook Pro 2015 too, the anti-glare coat was pretty much melted on the monitor due to a manufacturing error. When I took my MacBook, I was told that they cannot do anything, because I didn't bring it during the recall for a free replacement. I had listened to the same song by then, the song's name is: It's Apple's Company Policy for its lemon products. I later learned that it was called "Staingate".

It's so disappointing that Apple doesn't take ownership of its poor-quality electronics and there is no credibility. Wishing all the best of luck to all current and future Apple users, as you folks have a very frustrating and expensive route ahead.