By Sarah Kingsbury
There’s a setting on iPhone called Show Subject Field that a lot of people are scratching their head over. Simply put, this setting allows you to add or get rid of the subject line in iMessages and text messages in general. Whether you’ve never used this feature but would like to add a subject line to your text messages or you have this feature and want to get rid of the subject line—we’ll cover both here. Here’s what the Show Subject Field setting means on iPhone and how to add or remove a subject line in Messages.