Changing font size on both iPhone (iOS) and Android devices

iPhone (iOS) 

1. Open Settings - Tap on the "Settings" app from your iPhone's home screen.

2. Navigate to Display & Brightness - Scroll down and tap on "Display & Brightness."

3. Select Text Size - Within the "Display & Brightness" settings, tap on "Text Size."

4. Adjust Text Size - Use the slider to adjust the text size according to your preference. This will change the size of the system font used throughout your iPhone's interface.

5. Enable Bold Text (Optional) - If desired, you can also enable "Bold Text" from the "Display & Brightness" settings to make text appear thicker and more legible.

Android 

The process for changing fonts on Android devices can vary slightly depending on the device manufacturer and version of Android. However, here's a general guide:

1. Open Settings - Tap on the "Settings" app from your Android device's home screen.

2. Navigate to Display Settings - Scroll through the settings options and look for "Display," "Display & Brightness," or a similar option. Tap on it to proceed.

3. Find Font Settings - Within the display settings, look for an option related to "Font," "Font Size," or "Font Style." The exact wording may vary depending on your device.

4. Select Font Style - Tap on the font settings option, and you may be presented with a list of pre-installed font styles to choose from. Select the font style you prefer.

5. Download Additional Fonts (Optional) - Some Android devices allow you to download additional fonts from online sources or app stores. If this option is available, you can explore and download new fonts to customize your device further.

6. Apply Changes - After selecting a font style, your device may apply the changes immediately, or you may need to confirm your selection by tapping "Apply" or "OK."

Keep in mind that not all Android devices support font customization, especially if they have heavily customized user interfaces like Samsung's One UI or Huawei's EMUI. However, many Android devices offer some level of font customization in their settings.

If you're unable to find font customization options in your device's settings, you may need to explore third-party apps or launcher apps from the Google Play Store that offer font customization features. These apps can provide additional font styles and customization options beyond what's available in the device's default settings.