Anything is possible, however if the device is not exhibiting any strange behavior, there is no way to know. I would just make sure you keep a recent backup in case anything was to show up. If so, then you can make a Genius Bar appointment and see about a replacement. Understand though, user damage is not covered under the Apple warranty, so replacement would come with a cost.
If the iPhone is working as it should, it's probably ok. I've dropped my iPhone 6 on occasion without damage. They are pretty forgiving devices.
Thank you! Lucky i have a screen protector, no scratches at all
iphone 7 plus accidentally dropped
