Mobile device users are often faced with the need to focus attention on certain words or phrases in correspondence, notes or documents. A standard smartphone keyboard offers a limited set of formatting tools, and the feature is often not explicitly shown in the Quick Access toolbar. This creates the illusion of the impossibility of completing the task, although in fact the solution exists on several levels. underscore often not explicitly shown in the Quick Access Toolbar. This creates the illusion that the task is impossible, when in fact the solution exists on several levels.
The implementation method depends on the application you are working in. Messengers, text editors, social networks and system font settings work using different algorithms. In some cases, it is enough to press one button, in others, you will need to use special characters or third-party software. Android as an open system provides many loopholes for customizing the display of information.
In this material we will analyze all the available methods: from built-in tools Google Docs to advanced tricks with Unicode characters. You will learn to highlight important ideas so that they catch the eye of the recipient or yourself when reading again.
Using built-in tools in text editors
The most reliable and correct way to add a graphic element below the line is to use full-featured office packages. Applications like Microsoft Word, Google Docs or WPS Office have a full formatting panel hidden behind the menu button.
Open the document and select the desired piece of text with a long press. In the context menu that appears, look for an icon that looks like a letter A with stripes or a formatting icon (often looks like B I U). When you click on it, an extended panel will open, where the U (Underline) button is responsible for activating the underline. This is a standard protocol for most office applications.
It is important to understand the difference between simple underlining and styling. In advanced editors, you can select the line type: single, double, wavy or dotted. To do this, you need to go to additional font settings through the menu Format โ Text โ Underline Style. This level of detail is useful when working with official papers or drafts where you need to highlight an error or particular importance.
โ ๏ธ Attention: Formatting applied in Word or Google Docs may not display correctly when copying text into regular SMS or instant messengers like Telegram. The text may turn into a set of incomprehensible characters or lose its style.
โ๏ธ Checking the formatting in the document
Underlining in messengers and social networks
The situation with messengers is more complicated, since developers limit formatting options for the sake of uniformity of the interface. In Telegram, WhatsApp i Viber there is no direct button for underlining. However, there are workarounds that use Markdown markup or special style generators.
In Telegram Desktop and some Android clients, you can use Markdown markup, although there is no native underline, users often replace it with italics or bold. For real visual emphasis in any chats (Instagram, VK, WhatsApp), the method of copying special characters from Unicode is used. This is not an actual text style, but a separate graphic character that is โgluedโ to the letters.
To do this, you will need a third-party keyboard or website generator. You enter a word, the service converts it into a form with combining diacritics, and you copy the result. For example, the ordinary word โtextโ turns into a set of characters, where each letter has a special underscore character. This works anywhere that emoji and Extended Unicode are supported.
- ๐ฑ Use keyboard apps with built-in styles, like Fonts Keyboard or Blue Keyboard.
- ๐ Visit generator sites like LingoJam or Fsymbols via your phone's browser.
- ๐ฌ Copy the finished result and paste it into the message input field.
Do not use Unicode underscores for important passwords or verification codes. Some security systems may not recognize such characters as standard Latin or Cyrillic letters.
System changing fonts on Android
If your goal is to change the appearance of text throughout the smartphone interface, and not in a separate message, you should pay attention to the system settings. Some manufacturers, such as Samsung, Xiaomi and OnePlus, allow you to install third-party fonts, many of which have built-in underlining or a specific style.
Go to Settings โ Display โ Font and style (the path may vary depending on the model). In the theme store (for example, Galaxy Store or Themes) you can find fonts that visually look like they are underlined. After installing and applying such a font, all text in menus, settings and supported applications will change their appearance.
This method is global. It affects the readability of the entire device. It is worth remembering that some system fonts may not display well in applications that use their own text rendering engines, ignoring system settings. Before installing, be sure to look at the font preview.
| Smartphone brand | Path to font settings | Ability to install third-party fonts |
|---|---|---|
| Samsung | Settings โ Screen โ Font | Yes (via Galaxy Store) |
| Xiaomi / Redmi | Settings โ Display โ Font | Yes (via Themes app) |
| Google Pixel | Settings โ Accessibility | Limited (size and bold only) |
Risks of installing third-party fonts
Installing unofficial fonts via root access can lead to a cyclic reboot of the device (bootloop) if the font is damaged or incompatible with the Android version. Use only official theme stores.
Advanced methods: HTML and CSS in notes
For users taking notes in applications that support Rich Text or HTML (for example, Evernote, Notion, Obsidian), professional layout methods are available. Here you are working not with visual buttons, but with markup code, which gives you full control over the appearance of the line.
In editors that support Markdown with extensions or direct HTML input, you can use the tag <u>. By wrapping a word in this construct, you are guaranteed to get an underline that will look standard on any device when exported to PDF or HTML. The syntax looks like this: Your text.
A more flexible option is to use CSS styles inside supported notebooks. This allows you to change the line color, its thickness and indentation. For example, the construction Text will create a red underline. This is indispensable for students and professionals who maintain complex knowledge bases on the phone.
โ ๏ธ Attention: Application interfaces are updated regularly. If you don't find the HTML mode button, check the documentation for your specific application, as some developers remove this feature in paid subscriptions.
Specialized applications for formatting
If the built-in tools seem inconvenient to you, but generators in the browser work slow, it makes sense to install a specialized application. On Google Play, there is a category of utilities designed solely for styling text before sending.
Applications like Stylish Text or Fancy Text Generator offer hundreds of style options. You enter text into the app field, select the "Underline" or "Strike" style (strikethrough, which is often confused with underlining, but they are in the same menu), and copy the result. Such utilities often have a widget for quick access directly from the desktop.
The main advantage of such apps is speed. You don't need to search for a site on the Internet every time. Plus, many of them keep a history of your conversions, which is handy if you frequently use the same phrases in a stylized way. However, be careful with permissions: such applications often need access to the clipboard.
- ๐ Quick access: Widgets allow you to format text in one click.
- ๐จ Variety: Colored underlines and style combinations are available.
- โ ๏ธ Privacy: Check the application's access rights to your data.
Specialized applications save time, but use more battery resources in the background compared to a one-time visit to the generator site.
Common problems and their solutions
Despite the simplicity of the concept, users often encounter the fact that the underline โflies offโ or is displayed incorrectly. The most common problem is encoding incompatibility. When you copy text with Unicode characters to a recipient's device with an older version of Android or specific firmware, boxes or question marks may appear instead of a line.
Another problem arises when working with input fields in banking applications or registration forms. Such fields often have an input mask that allows only standard letters and numbers. Trying to insert stylized text there will result in a validation error or automatic security clearance of the field.
If the underline looks too close to the text or, conversely, too far away, it depends on the selected font or line height in the application. In the system screen settings, you can try changing Font size or Screen size, which sometimes affects the rendering of diacritics.
Error example validation:Input: Tฬฒteฬฒkฬฒsฬฒtฬฒ
System response: โInvalid charactersโ
The solution is simple: for critical data (card numbers, logins, addresses), always use standard text without embellishments. Leave styling for informal communication and personal notes.
โ ๏ธ Attention: Technical characteristics of font display depend on the version of Android and the specific shell of the manufacturer (MIUI, OneUI, ColorOS). What looks beautiful on a Pixel can work well on a budget smartphone.
FAQ: Frequently Asked Questions
Is it possible to make an underline in regular SMS?
It is impossible to use it in classic SMS messages formatting The text is transmitted in a simple encoded form. The only way is to use underscores _ manually (for example _text_), but this will not look like a real line under the letters, just like characters before and after the word.
Why is the underline not visible in WhatsApp?
WhatsApp does not support the underscore tag in its internal markup (only bold, _italic_ and ~strikethrough~ work there). To get a visual line, you need to use external Unicode character generators and paste the finished result as plain text.
Does underlining affect the size of the message?
Yes, if you use special Unicode characters. Each letter with an underscore actually takes up more bytes of memory than a regular letter, since it consists of a base character and a combining character. For short messages this is not noticeable, but for long texts it can matter.
How to remove the underline if it appeared accidentally?
If this is formatting in the editor, select the text and press the button U again. If these are Unicode characters, they cannot be "turned off", you need to delete this text and type it again without using the style generator.
Is there a difference between underlining on iPhone and Android?
There is no fundamental difference, since both devices use Unicode standards for special characters. However, the default fonts are different, so the same underline may look slightly higher or lower on different screens.