Update README.md

iPhone 8 is minimum

README.md

@@ -51,7 +51,7 @@ https://loopkit.github.io/loopdocs/gh-actions/gh-overview/
 
 # iPhone and iPod
 
-iAPS app runs on iPhone or iPod. An iPhone 7 or newer is recommended.
+iAPS app runs on iPhone or iPod. An iPhone 8 or newer is required.
 
 # Documentation