how can I turn on the globe symbol on iphone 16 pro max?

bienofgod wrote:

How can I turn on the globe symbol in order to select language

You need to add a keyboard to settings / general / keyboard / keyboards

(you may think you had done this already, but sometimes separate keyboards get merged in the new bilingual feature of iOS 18, and need to be added again for the globe key to appear)

I'm not sure what "globe symbol" you're referring to, but perhaps this will help:

Change the language on your iPhone or iPad - Apple Support

Regards.