It can fit inside but either across the back of the main compartment somewhat snugly or at an angle neither of which was ideal imo. The otter box commuter case is not as bulky as the big Otterbox cases but it does have a lip around the screen for protection making it less sleek than some cases out there . The extra fabric inside would feel Luxurious on a larger bag but it just added a little too much bulk for me . I suspected this from the YouTube videos I’ve watched but FOMO is real and I had to see for myself. Had it packed back up quickly for return which is always a pretty clear indication for me lol . Another inch of length would have made all the difference to me . Hope this helps and best of luck to all who get this bag it’s very pretty .