I would indeed start with a very simple screen and let the user activate functionalities at the cost of clutter. Different people have different focus but they will never be interested in everything at once, particularly when the clutter gets so bad that you cannot pay attention to anything. As an example, my own typical focus is on navigation, but I would not mind some extra info provided it did not cover screen or otherwise distract too much. Also messages popping out in Turkish are pretty confusing when you are not a Turkish speaker - no I did not set the language to Turkish, just some pop messages were in Turkish.