The phone gets "used" in two different scenes. Once as a player-choice while peeing, the other while showing the last photo during the game. I think you are confusing the two.If Diana didn't tease Reynold and didn't pose topless then there is no option to view the phone when she pee later!
There is most likely an error in this place.
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I don’t understand anything about coding, so i did the simply selected the option manually.
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But this solution helped to avoid the problem in the scene with the game of truth and dare. Then apparently the previous incorrect algorithm works because in the morning Diana allowed herself to take a tease Reynold under the waterfall. But this already needs to be corrected by the dev!
While she is peeing, if she teased Reynold a button will jump up to look at the phone. If she did not tease Reynold, there is no option to look at the phone and she returns to the party. This is the phone scene that I was referring to as the bug in the IF statement.
The phone during the game, you are referring to, is not an actual phone interaction it's just flavor text that is supposed to present text based on the type of photo you took with Reynold.