Black Screen error after tapping to play..

Unknown

Hello, even since the last update, once in a while my screen just turns black after making that high-five with Iron Man, no sign of activity for however long, despite good internet connection..

The problem persists after restarting the app, can't enter or play.. Only restarting the phone seems to fix the problem, but I'm afraid the problem may persist later..

Anyone else having this situation?

Currently playing on Android 4.2.2 on a ZTE N986, which carries quad core proc and 1 GB RAM, so specs doesn't seems to be the problem and the game was running good 200+ days before..