How to bold text in iPhone text messages using subject lines?

It would be great if there were a way to send iPhone text messages with bold, italicized, or underlined text. But for now, any text messages you send with the iPhone’s default messages app will have to stay written in a standard font.

That is, except for their subject line. By editing your iPhone’s message settings, you can give every text a bolded subject line. And once you start sending text messages with bolded subject lines, you probably won’t ever want to go back. Sending messages with bolded subjects helps them stand out, and can be an asset when texting in a professional context.

How to bold text in iPhone text messages using subject lines

1. Open your iPhone’s Settings app and scroll down to and tap “Messages.”

2. Near the bottom of the page, underneath the “SMS/MMS” heading, tap the toggle switch next to “Show Subject Field” so it turns green and is switched on.

3. Now open your Messages app and start a new message or open an existing chain.

4. You will now see a “Subject” field added to the area where you enter text. Anything you type here will be bolded when you send the message.

However, that you can’t just type your entire text message in this subject line. If you try, the bold text will be turned back into regular text. Although the iPhone’s standard text messaging app doesn’t let you use bold text, there are a number of other texting apps that do. This includes popular apps like WhatsApp and Discord.

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