Difference between spoiled and spoiled rotten

I assume the difference between the two would be the spoiled person would be perceived that way from an outside view because when they break their phone, lets say, they're granted with a new one such as an iPhone7 when the original was a blackberry. While the spoiled rotten term would be for those who have behavioral issues when things like "No!" are said to them and a tantrum begins.

D- dialation and reflection