Mcpe so I'm on a ios device iphone 5s its updated but everytime I open the game it crashes but when I turn my wifi off it loads fine but if I was to turn it back on it freezes.

Mcpe so I'm on a ios device iphone 5s its updated but everytime I open the game it crashes but when I turn my wifi off it loads fine but if I was to turn it back on it freezes instantly.