Just like when you are writing emails, a text message or iMessage can have a subject line. Many people don’t realize this, simply because most people do not use them when they are sending text messages. It is also a feature that is turned off on your iPhone by default so, when it is enabled, it can look a little odd.
Fortunately the subject field in the Messages app on your iPhone can be toggled on or off with relative ease, so it is a simple fix if the subject line is present and you do not want it. Our short guide below will teach you the steps needed to disable the subject field from your message composition screen.
Removing the Subject Field from Text Messages in iOS 8
The steps below were performed on an iPhone 6 Plus, in iOS 8. Steps and screen may be slightly different for previous versions of iOS.
If you have a half moon on iPhone text message conversations then you may not be seeing alerts or notifications for that message.
Step 1: Tap the Settings icon.

Step 2: Scroll down and select the Messages option.

Step 3: Scroll down to the SMS/MMS section, then tap the button to the right of Show Subject Field to turn it off. You will know that the subject field is disabled when there is not any green shading around the button, as in the image below.

Is there a telemarketer or other unwanted person that keeps calling or texting you? Take advantage of the call blocking feature added in iOS 7 and start blocking people.
Matthew Burleigh has been writing tech tutorials since 2008. His writing has appeared on dozens of different websites and been read over 50 million times.
After receiving his Bachelor’s and Master’s degrees in Computer Science he spent several years working in IT management for small businesses. However, he now works full time writing content online and creating websites.
His main writing topics include iPhones, Microsoft Office, Google Apps, Android, and Photoshop, but he has also written about many other tech topics as well.
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