Why does my mobile phone spend money on playing games, and he doesn't send text messages or deduct money?

Hello, landlord, there are several possibilities for this situation you mentioned.

The first one is that the permission of your mobile phone system is the permission to prohibit the software from sending short messages, which means that you can't send short messages when you recharge things with this game.

The second is that there is a loophole in the game you are playing, but this loophole will soon be blocked by technicians.

The third is that your mobile phone has no SIM card inserted at all.

It stands to reason that the landlord should belong to the first case.