How to Bold Text on iPhone 15: A Step-by-Step Guide

Want to spice up your text messages or notes on your iPhone 15 with some bold formatting? It’s simpler than you might think! You don’t need any fancy apps or technical know-how, just a few quick taps, and you’re good to go.

Related Video: How to Bold Text on iPhone 15

Step by Step Tutorial to Bold Text on iPhone 15

Before we dive into the steps, let’s understand what we’re aiming for. By following these instructions, you’ll learn how to make specific words or phrases stand out in your text by making them bold. This can be useful for emphasizing important points or just adding a bit of flair to your messages.

Step 1: Open the app you want to bold text in

Open the app where you want to bold text. This could be Messages, Notes, Mail, or any other app that allows text formatting.

When you open your chosen app, start a new message or note, or select the text you want to bold if it’s already written.

Step 2: Select the text you want to bold

Tap and hold the text you want to bold until the selection tool appears, then adjust the selection handles if necessary.

Be precise with your text selection to ensure you’re only bolding the words you want to stand out.

Step 3: Tap the “BIU” button

Tap the “BIU” button in the popup menu that appears after selecting the text.

“BIU” stands for Bold, Italics, Underline, which are the formatting options you can apply to your selected text.

Step 4: Choose “Bold” from the options

After tapping the “BIU” button, a new set of options will appear. Tap “Bold” to apply bold formatting to your selected text.

Once you tap “Bold,” you’ll see the selected text become thicker and darker, indicating that it’s now bold.

After you complete these steps, your selected text will be boldly standing out in whatever message or note you’re composing. It’s a handy way to add emphasis and make your text more visually appealing.

Tips for Bold Text on iPhone 15

  • Tip: You can also use bold formatting in third-party apps like WhatsApp or Facebook Messenger if they support text formatting.
  • Tip: Combine bold text with other formatting options like italics or underline for even more emphasis.
  • Tip: If you can’t find the “BIU” option, your app might not support text formatting. Try using a different app.
  • Tip: Remember that bold text might not appear the same on different devices or apps, depending on their formatting capabilities.
  • Tip: Use bold text sparingly to ensure it has the intended impact. Too much bold text can make your message harder to read.

Frequently Asked Questions

Can I bold text in any app on my iPhone 15?

Some apps may not support text formatting. Stick to apps like Messages, Notes, or Mail for reliable bold text formatting.

Will bold text show up on other people’s phones?

As long as their device supports bold text, yes. However, it may look different depending on their device and settings.

Can I undo bold text once applied?

Absolutely, just select the bold text again, tap the “BIU” button, and choose “Bold” to unselect it.

Can I bold only one word in a sentence?

Yes, you can select and bold individual words without affecting the rest of the sentence.

Is bold text the only formatting option available on iPhone 15?

No, you can also apply italics, underline, and sometimes even strikethrough, depending on the app.


  1. Open the app you want to bold text in.
  2. Select the text you want to bold.
  3. Tap the “BIU” button.
  4. Choose “Bold” from the options.


Bold text on the iPhone 15 is a breeze once you know how. Whether you’re adding emphasis to an important part of your message, making your notes stand out, or just having fun with your texts, understanding how to bold text is a simple but powerful addition to your iPhone skillset. It can make your communication clearer and more engaging, which is always a plus in our book-heavy digital world. So go ahead, give your texts that extra oomph they’ve been missing, and enjoy the newfound power of bold text on your iPhone 15.

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