I have this same issue, my game freezes very often on Android, I have a poco f6, it has happened with other games but this one it happens very often to the point I have to save after every action just in case.
Odd, never encountered it, can you providde more details about the issue?
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What device are you using? Is there an error that you see when it happens? Does the game freeze or just close the app? Does it happen with other games too / or the free version?
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Unfortunately since I cannot reproduce this issue myself nor log it's errors I must rely on more information to procced.
It happens mostly after I use the clock, maybe after I answer the phone and immediately use the clock. It freezes and then after a while restarts to the main menu. I have yet to try the free version. I can't really play it properly so tried to use cheats and the TV's remain static sometimes trying to load a recording