How to update my iPhone to iOS 16?

Assuming you have a compatible device, see: Update your iPhone, iPad, or iPod touch - Apple Support

And: If your iPhone, iPad, or iPod touch won't update - Apple Support

If the above Apple articles do not help, please post back with relevant information. 

Hello ~ Any help by clicking on below?

If your iPhone or iPad won't update - Apple Support

Note once inside the link above you may click on other tabs of interest for further information. Post back if needed.

~Katana-San~