After we turn the flashlight on after entering the apartment, all we can do is hang up the phone and nothing happens.
Hi danielsuraci, thanks for playing our game and commenting! On that screen you're on, there's nothing you can do to progress in the game, but what you do there can unlock a secret ending, if you finish the game. If you're stuck, here's a hint: To reach the phone, you must have moved left from the apartment entrance. From the entrance there are still two other screens you can access. Try going in the opposite direction...