photos

Hi fjoleigh,

Welcome to the Apple Community.

Wondering if you are taking about using MMS, or photos sent / received in the Messages app..

and

If you have "set up" Messages on your iPhone

You might need to check your plan with your provider to check the use of cellular data.

(or turn cellular off for "Messages" and just use wi-fi.)

See Apple's article: What is the difference between "Messages" and SMS/MMS?

https://support.apple.com/en-au/HT207006

____________________________________________________

Apple support has articles online (links below) that may help.

Your Apple ID is the account you use to access Apple services,

like the App Store, Apple Music, iCloud, Messages, FaceTime, and more.

It includes the email address and password you use to sign in,

as well as the contact, payment, and security details you use across Apple services. 

How to create your Apple ID if you do not have one::

https://support.apple.com/en-au/HT204316/

________________________________________________

Set up Messages on iPhone (uses Apple ID)

https://support.apple.com/en-au/guide/iphone/iph3d039b67/ios

View, share, and print photos on iPhone:

Eg: Says: While viewing a photo, tap 

To share your photo, select an option such as AirDrop, Mail, or Messages.

Complete article: https://support.apple.com/en-au/guide/iphone/iph3d314a6f/ios

___________________________________________

More on how to use Messages on your iPhone, iPad, or iPod touch

Eg: How to send a message ... how to use "Shared with you".

https://support.apple.com/en-us/HT201287

All the best :-)