To change the default email app on an iPhone, you'll need to upgrade to iOS 14 and make sure you have a compatible app ...

To reverse a video on your iPhone, you'll need to use a third-party app like Reverse Vid to edit and save recorded video in reverse.

I traded an apple to an iPhone 13 in 7 days. I turned this apple into an iPhone 13 in 7 days! This video is very similar to my good friend @ryan - A special thanks to my friends who helped me.