I don't know about the 5x optical but the over day I took a picture of a beach. On the phone with x2 I could see a sign that I didn't even noted bared-eyed. With x10 I could actually read the sign only the little phone number alert was unreadable.

With my bare eyes I couldn't even read the title of the sign, barely see the sign actually.

lol ONLY

The fact that we can say that a phone ONLY has any "x" optical zoom is crazy.

Counterpoint:

https://m.youtube.com/watch?v=phD6UCECIig