Level 4-4 is just one of the dozens of stages that you will have to pass in Doors & Rooms Android app. I assume that you've already passed the previous chapter which is the
Silent Hospital and now you are facing yet another bunch of difficult levels in Claustrophobia that is why you are here - searching for answers. Do not worry my friend, I got you covered here.
I suggest, though, that you try a hundred times in solving this on your own before resorting to use this guide as it will not only give solutions on how to beat the level but it also gives spoilers that will take away the excitement of the game. But if you really need for any reason, please be my guest and take a look at
Doors & Rooms level 4-4 walkthrough laid out down below.
Here is the earlier
levels' guide for Doors and Rooms app.