How to Add Subject to iMessage on iPhone 13: A Step-by-Step Guide


Ted Stinson

Adding a subject to your iMessage on an iPhone 13 is a nifty little trick that can make your text conversations more organized and professional. It’s a feature that many people don’t know about, but once you start using it, you’ll wonder how you ever texted without it. So, let’s dive in and learn how to add a subject to your iMessages!

Step by Step Tutorial: How to Add Subject to iMessage on iPhone 13

Before we get into the nitty-gritty, it’s important to understand what these steps will achieve. Adding a subject line to your iMessages will help you keep track of your conversations and make them stand out in your message list. It’s like having a mini email within your texts!

Step 1: Open Settings

Open the Settings app on your iPhone 13.

When you open Settings, you’ll see a long list of options. Don’t be intimidated! Just scroll down until you find ‘Messages’ and tap on it.

Step 2: Find the ‘Show Subject Field’ Option

Scroll down and look for the ‘Show Subject Field’ option.

This option is usually near the bottom of the screen. You might have to scroll down a bit to find it, but it’s there, I promise!

Step 3: Toggle the Switch On

Toggle the ‘Show Subject Field’ switch to the on position.

When the switch is green, that means the subject field will now appear when you compose a new message or reply to an existing one.

After you complete these steps, every time you go to send an iMessage, you’ll see a new field above the text box where you can enter a subject. This subject will appear in bold above the message in your conversation thread, making it easy to see what each message is about at a glance.

Tips for Adding a Subject to iMessage on iPhone 13

  • Make sure your iPhone 13 is updated to the latest iOS version. Sometimes new features don’t work properly on older software.
  • Keep your subjects short and to the point. Long subjects can be cut off in the message list view.
  • Use subjects for important messages that you want to stand out or for group messages where you want to set the topic of conversation.
  • Remember that not everyone uses subjects in their texts, so don’t be surprised if your friends don’t follow suit.
  • If you decide you don’t like having subjects in your messages, you can always go back into settings and turn the feature off.

Frequently Asked Questions

Will the subject line appear in text messages to non-iPhone users?

No, the subject line will only appear in iMessages, which are texts between Apple devices.

Can I add a subject to an already sent message?

Unfortunately, you cannot add a subject to a message that has already been sent. Subjects need to be added before you send the message.

Will adding a subject to my iMessages use more data?

No, adding a subject won’t significantly increase your data usage. It’s just like adding a bit more text to your message.

Can I customize the appearance of the subject line?

You can’t customize the appearance of the subject line itself, but you can use all the usual formatting options in the subject text, like bold or italics.

What if I don’t see the ‘Show Subject Field’ option in my settings?

Make sure you’re looking in the Messages section of your Settings app. If you’re still not seeing it, your iPhone may need an update, or the feature may not be available in your region.


  1. Open the Settings app on your iPhone 13.
  2. Scroll down to ‘Messages’ and tap on it.
  3. Find and toggle on the ‘Show Subject Field’ option.


Well, there you have it, folks! You’re now well on your way to becoming an iMessage subject line expert on your iPhone 13. Adding subjects to your messages is a small change that can make a big difference in how you communicate. It’s all about making your messages clear, organized, and easy to navigate, especially in those group chats that tend to get a little chaotic.

Remember, communication is key in our fast-paced digital world. Whether you’re coordinating with colleagues, planning a get-together with friends, or just trying to keep your conversations straight, adding a subject to your iMessages can help you stay on top of things. So go ahead, give it a try, and watch as your texting game gets a serious upgrade.

And if you ever get tired of the feature, it’s just as easy to turn off as it was to turn on. But give it some time, and you might find that those subject lines become an essential part of your texting routine. Happy texting, iPhone 13 users!