I'd say it's really good in theory. Regular people usually don't know the first thing about mining, and having a reputable company like Samsung supply to companies that sell optimized pre-built miners puts mining within the reach of the mainstream. Interest in mining equipment seems to be heating up, so this is a good business move by Samsung. I hope it sparks interest in Bitcoin again, at least.
I think, is it worthy mining with smartphone? but this is a considerable improvement, because the smartphone industry is looking for cryptocurrency
It has nothing to do with smartphones. They're selling chips to mining equipment providers.