Apple only release 3 or 4 devices per year and they create their own SOC and software so it is very easy to optimize new updates and push them soon as possible but Samsung need to depend on Google for software and snapdragon or other SOC manufacturer...
It is a hardware problem downgrading software won't help. In this yellow case problem the connector that connects display to motherboard is damaged due to heat. Display is still good but connector is not working properly. Connectors can't replace the...