Which country is iPhone with MU793ZD/A intended to be used in?

The ZD units are intended for Austria, Belgium, France, Germany, Luxembourg, Monaco, Switzerland, or The Netherlands. One for the UK would be B, BT, or ZO.

(253546)

Designed by Apple in the United States, most likely manufactured in China.

If you meant the country it was intended for use in, UK.

Look up your model according to Apple Identify your iPhone model - Apple Support

Are you saying Google lied to me?

My entire world view and trust in the web is shaken.

Off to my fainting couch to recover.