I bought and had to return the Mophie Juice to Best Buy because it did not fit my IPhone 8. It was so tight I was literally afraid it would break the back glass of my brand new phone after trying to remove it unsuccessfully. I called Mophie. They have excellent customer service.and have received numerous complaints about the same problem. I was advised that the IPhone 8 is actually just a small fraction of an inch larger than the iPhone 7, causing the problem. The Mophie Juice for iPhone 8 is expected to be available in December. Since the case was put on by a very helpful Best Buy person, I was advised to take it back there to have it removed and wait until Mophie's case for the iPhone 8 is released. Best Buy's service was outstanding. Take a look at Mophie's site. There are no cases for the iPhone 8 yet; only the charging pads; but the Juice is shown for the iPhone 7. I always use Mophie cases on my iPhones and LOVE them. However, anyone who uses them knows the heat from external battery is somewhat palpable when in use, so I can understand the bigger problems potentially ahead with using it due to the super tight fit. Instead, I will follow Mophies advice and wait for the Mophie case designed for the 8. My best advice: Call Mophie yourself before purchasing this case for an iPhone 8. Hope this helps someone.