I am doing this Blenderguru tutorial to work on my modelling skills. In the image below I have marked some areas where I made some modelling mistakes. Now I would like to learn what I have done wrong and how best to repair those mistakes.
Here you can see some details of the top left corner:
Area 1 What made that sharp crease in area 1 ? And how to remove that ?
Area 2 Why this "sharp" shape in area 2 ? And how to remove that ?
Area 3 The glass of the iphone and the metal ring don't abut against each other. There is a "gap" between those two objects. How can I repair that ?