[Dudi]

Oh, never heard about Doogee, but I guess because it is dirty cheap (only 80$) I would not expect high quality phone with this price.

I also see some bad reviews of this phone on the internet. But this can be expected.

The main problem is not with the 1GB RAM or the slow CPU. I think the problem is the quality.
There are other phones too with a low specification but they have quality at the low budget category.
For example Xiaomi Redmi 4A is cheap phone but it has good quality.
There are Chinese brand which are make very low quality devices:
Doodge, Outkitel, Elephone, Ulefone, Umidigi, Leagoo, Homtom.