My phone model is Lenovo A2020a40. It has 4 CPU Cores 1.1 GHz, 1 GB Ram, 16 GB Storage and build number is A2020a40_S182_160830_ROW.
I don't know whether my phone or the game is causing the crash. Everytime I create or open a world, it just crashes. Before 0.15.90.7 was released, it works fine but when I updated the app to the current version it crashes.
I think this is a duplicate of MCPE-17063.
Please check that ticket and comments for possible solution!