Thanks again for your help. I did just find the diorama I was searching for and my iPhone 12 fits. It’s snug and does not fit much more but is exactly what I was looking for!i have the iPhone 12 pro max and it barely fits with the case on. added my key fob to show the width. There’s the zip pocket and an open pocket, but with the phone not much can be in those pockets otherwise it won’t stay closed
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(sorry for bad photo quality! Tried to prop the bag open with one hand and balance my iPad with the other to take the pic)