Analysis of game tablet !qu smilemax

I have stopped charging my gaming tablet !qu smilemax, judging by the sound, inside fallen off some detail, now I want to disassemble it, but don't know how. I did a lot of googling and have not found a single guide, found on the bottom two screw unscrewed, it has not brought any results...
Please, those who have approached it or fumbles it, help and give advice on how to disassemble it