But, can someone say or "write" when the Beta Testing Starts, i know its a Hard Question but i want know and i am Ready for Upgrading to Nougat i learned how to use the SP Flash Tool
I should think that depends on where you bought it. GearBest har this line in the description of all their Android phones:
This Android/Windows device is designed to function specifically with the current Android/Windows OS installed on it. Any alterations such as upgrades, modding with custom ROMs, rooting or flashing the Android device with other firmware will automatically void the device's warranty.
Yes, but not like extremely bad. Third-party applications unusable. With something like that, I have not yet met with other phones. ICQ, WhatsApp and all other applications that use the camera useless. Do you understand ?