How do I contact Siri on my phone to send a text message?

Hi cmf1813

Welcome to the Apple Community.

How do I contact Siri on my phone to send a text message.

Just say, "Hey Siri, send a text message to [speak name of someone listed in your contacts]

Apple support has articles online, that can help you get started using Siri.

What to do: If "Hey Siri" isn't working on your iPhone - Apple Support

More info. if needed:

Use Siri

says: "Activate Siri with your voice

When you activate Siri with your voice, Siri responds out loud.

Say “Hey Siri,” then ask a question or make a request.

For example, say something like “Hey Siri, what’s the weather for today?” 

or “Hey Siri, set an alarm for 8 a.m.”

Find out what Siri can do"

Eg: says: "Use Siri to share information with contacts

For example, when looking at a photo in your Photo library, say something like 

“Hey Siri, send this to mom” to create a new message with the photo".

Tell Siri about yourself

Eg: says : "Tell Siri about a relationship.

Say something like “Hey Siri, Eliza Block is my wife” or “Hey Siri, Ashley Kamin is my mom.”

All the best :-)