First thing to do is figure out ‘where’ they are. (In front of the desk, by the piano, in front of the globe, etc). Then you can ask specific questions about what is in that area. Asking “what do you see” is a good phrase to use often.
Asking “Where are you?” is a great way to regain your bearings during the game. From there you can figure out if you want to go somewhere else, or stay where you are at and look around.
Words mean things. So do specific words on specific notes and letters (and other things). Read them carefully.
Maybe there is more than one combination lock in the room. Keeping looking!
Maybe the ‘lock’ wasn’t ready to be unlocked yet. Perhaps you need to activate something else first? One thing leads to another.
Click the phone Home button. Go into Settings, and click on Backup Phone.
Click on the Home button. Go into Settings, click on Restore Phone. This will load the last Backup (saved game). Remember – there is only 1 backup at a time. Backing up the phone will overwrite the previous backup.