China phones had emerged in the mobile industry for quite some time now. They continuously developed and offered different tiers of mobile devices depending on the needs of the user. Due to the fast growing technology that revolves in mobile industry, along with hard competition between China's mobile manufacturers they evolved and considered a competitor with the mobile giants; Samsung, Apple, and other leading brands on the market.
Based on my experience with China phones; OPPO, Huawei, Xiaomi, and the likes, I found that their mid-end (regardless of the brand) to high-end devices are adequate for a daily usage compared to the leading brands on the market. China phones also offers what Samsung and other Android devices has to offer, application wise. When it comes to physical aesthetics China phones had a revealing concept that they alone develops, they used plastics instead of metal or glass on their mid-end devices. And some of their high-end devices also lacks some features on the physical side of the devices, this is understandable due to its lower costing. Performance is not so different from the leading brands on the market, they also uses some of the hardware's that high-end phones uses. The only drawback for me is the battery life which is not competitive enough compared to the leading brands on the market.
Bottom line is, China phones are good when you are not a heavy user. Because it's cheaper compared to other competing brands out there, then the specifications are not so impressive for long term use. On the other hand, if you're not a heavy user and use your phone occasionally for a single task or two, then this phones are good enough. Plus it's cheaper compared to other brands out there in the market.