How To Improve Video Game Graphics on Your Smartphone
>> Go to Settings > About Phone, then tap on Build number 7 times. This will enable Developer Options.
>> Go back to Settings and tap on Developer Options. Scroll down to Force 4x MSAA and toggle the box.
>> Now, when you play any game, the characters should be smoother around the edges. If the game begins to crash frequently or stutter or becomes slower, go back and untoggle the Force 4x MSAA option.
Note that when you improve your Android game graphics like this, it may drain your battery.