I'm afraid you have a completely wrong thinking. If you choose an Android-based device, you should be willing to fix the bugs yourself. Even if it is based on the community. Because, an Android device never runs very well. Especially with the China Floundern here not much is tested. One sees again and again at the Firmwares which are published here by Himedia. The FWs grows with the customer. Unfortunately this is the case everywhere.
If you want a working system, never buy an Android device. Then you'd better go to Apple, they patch their mistakes quite promptly. At Himedia you sometimes have to wait several months or even years. Or forever.
See analogously the security status of January 2017!! Means, more or less we get the same FW-status since 2 years! Except for a few apps that will be recompiled, like the PackageInstaller last time. A lot has changed, I had taken them apart, but not tested them, see above.