Is only one iPhone 7 the same value as four of UMi Plus?

The Jet Black variant of the iPhone 7 is apparently inclined to get scratched easily. The information comes straight from Apple's disclaimer in a footnote on the tech specs page.
"The high-gloss finish of the jet black iPhone 7 is achieved through a precision nine-step anodization and polishing process. Its surface is equally as hard as other anodized Apple products; however, its high shine may show fine micro-abrasions with use" - warns Apple.This suggests that the nine-step polishing and anodization process from the company is not sufficient to ensure that the iPhone 7 will not suffer from abrasions, minor or different kind. That’s not the case at UMi Plus since its coating process doesn’t use delicate glossy materials. So, don’t worry about scratches with the Plus!

Umi Plus has a 4000mAh high-density battery with cells manufactured by Sony, able to give you a whole-day use even on your most demanding days, while the iPhone 7 features a 1960mAh battery. Apple claims that the last iPhone is 2x more powerful than iPhone 6, that means iPhone 7 will be more power hungry, that probably won’t be enough for the heavy users to complete their day.

UMi Plus is quick on its feet thanks to the latest Quick Charge PE+ 2.5 Technology, which allows a full charge in one and a half hour. iPhone 7 won’t use the same (or any kind of) quick charge technology, so it may take even more time to charge a battery half the size.

With UMi Plus, you will never have to worry about multitasking and smoothness, you can recall your apps and continue using them from the point you left in no time, while with the Micro-SD support up to 256GB you can store an insane amount of data (videos, photos, documents etc.) up to about 280GB together with the internal storage. You have to go for the most expensive iPhone 7 variant to have 256GB of storage.

We'd had have never thought this would've been something to praise about but Apple managed to surprise (in a negative way) us again by removing another useful and in fact a must-have feature. So, after the lack of SD-slot even in past models, now the 3.5mm audio output just followed the same route, creating a lot of complaints since now users have to use either an adaptor (forget about charging your phone while you listen to music) or a bluetooth headset, which also needs to be charged and provides lower sound quality as well. We don’t think a progress should cause issues, so we left the 3.5m jack where it has always been!

Last but not least, the price has to be taken into account when comparing two phones, you can buy four UMi Plus phone for almost the same price of an iPhone 7. Is all this difference justified? Seeing what the Plus is capable of, we don’t think so.