Minecraft Opens To A Black Screen

Hello

On 8/7/2018 my sister updated Minecraft to version 1.5.3 hoping that this issue might've been resolved. However, that was not the case. Whenever my sister opens Minecraft, it immediately displays a black screen. She is able to press buttons because she can hear them clicking, but is unable to actually play Minecraft.

My sister owns a Samsung Galaxy s7

Thank-You Guys