iOS 17: A Step-by-Step Guide to Enabling Subject Field in iPhone Messages

Enabling the subject field in messages on your iPhone can bring more clarity to your conversations. It allows you to provide a brief summary of what the message is about, much like the subject line in an email. This can be particularly useful when you’re dealing with a lot of text messages and need to keep your conversations organized. By following these easy steps, you’ll know exactly how to do it in no time.

Related Video: Enabling Subject Field in iPhone Messages

How to Enable the Subject Field in Messages on iPhone

Before we dive into the steps, let’s clarify what we’re about to do. Enabling the subject field in your iPhone’s messages adds a separate line above the body of your text where you can write a subject. This helps to categorize your message or give the recipient a heads-up on what the message is about. Now, let’s get to the steps.

Step 1: Open Settings

Tap the ‘Settings’ app on your iPhone’s home screen.

The Settings app is where you can customize your iPhone to your liking. It’s the one with the gear icon. Once you’re in, you’re ready for the next step.

Step 2: Scroll to Messages

Swipe up until you find the ‘Messages’ option and tap it.

The Messages section in Settings is where you can adjust all things related to your messaging experience, such as read receipts, message previews, and, of course, the subject field.

Step 3: Find ‘Show Subject Field’

Scroll down until you see the ‘Show Subject Field’ toggle.

This option may not be immediately visible, so you might need to swipe a bit. But once you find it, you’re almost there!

Step 4: Toggle the Switch

Tap the switch next to ‘Show Subject Field’ to turn it on.

When the switch turns green, that means the subject field is enabled. Now, every time you start a new message, you’ll see a separate line to enter a subject.

After completing these steps, when you go to send a new message, you’ll notice a new field above the text box labeled ‘Subject.’ Here, you can enter a concise title for your message. This helps the recipient understand the context of your message before even reading the text body.

Tips for Using the Subject Field in Messages on iPhone

  • Keep subjects short and to the point for maximum clarity.
  • Use subjects to categorize messages for easy searching later.
  • Remember, not all recipients may have the subject field enabled, so don’t put critical information only in the subject.
  • Consider using subjects for group messages to keep the conversation on track.
  • Use subjects when messaging someone for the first time to make a good first impression.

Frequently Asked Questions

Will the subject show up for someone who doesn’t have the subject field enabled?

The subject will still appear at the beginning of your message, but it may not be separated from the rest of your text.

Can I add a subject to a message after I’ve started typing?

Yes, you can tap the subject field at any time before you send your message to add or edit the subject.

Does enabling the subject field change how my messages are displayed?

The subject field only adds an additional line to your messages; it doesn’t change the way your existing messages are displayed.

Can I disable the subject field after enabling it?

Absolutely! Just follow the steps above and toggle the switch to ‘off’ in Step 4.

Will the recipient be able to reply to the subject?

The subject is just for your outgoing messages. The recipient can see it, but replies will be just like regular text messages.


  1. Open the ‘Settings’ app.
  2. Tap ‘Messages’ in the settings list.
  3. Find ‘Show Subject Field.’
  4. Toggle the switch to enable the subject field.


Enabling the subject field in messages on your iPhone is a simple but effective way to bring organization and clarity to your text messaging. Whether you’re coordinating with coworkers, planning events with friends, or just want to make sure your messages are understood, adding a subject line can make a world of difference. With iOS 17, Apple continues to refine and improve the iPhone experience, and this small feature is just one of many that help streamline our digital lives. Don’t be afraid to dive into your settings and customize your iPhone to work best for you. You’re the one using it, after all! So, go ahead and give it a try. Who knows? It might just change the way you text.

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