[MCPE] I cant make a world without black screening/I get blackscreen since ver. 0.7.1 to ver. 0.9.0!

When I first downloaded MCPE on my phone i always get a blackscreen, I couldnt play minecraft. I deleted it and waited for next updates, Still i get a blackscreen. I deleted it again and installed it just a few minutes ago and I still get a blackscreen PLEASE HELP I CANT PLAY MAH FAVE GAME.