my iphone 16 pro and the satellites is not showing up and it up to date too

Confirm you are running iOS 18.5, and have completed the ”Before you go off the grid” section:

• About Messages via satellite on your iPhone - Apple Support

Then be outside when you test this.

Emergency SOS via Satellite is not supported in all places. Is your region apart of this supported list? Australia, Austria, Belgium, Canada, France, Germany, Ireland, Italy, Japan, Luxembourg, the Netherlands, New Zealand, Portugal, Spain, Switzerland, the U.K., and the U.S.