Not sure about the secret part, but this is an excellent list of little known and very useful features.
iOS 11: Secret features you’re probably not using
Not sure about the secret part, but this is an excellent list of little known and very useful features.
There are always a few new features that you forget to use until someone shows them to you.
“Secret” is more clickable though.
Found the screen shot thing by accident. It’s pretty cool, though.