Can I change the appearance (light or dark mode) in the Second Phone Number app?

Absolutely! Follow these steps:

1. Open the Second Phone Number app.
2. Tap the Gear icon in the top left corner of any screen (Messages, Make a Call). This will take you to the Settings page. 
3. Scroll down within the Settings page and look for the option labeled Appearance.
4. Tap on Appearance to reveal theme options. Select Dark for a darker theme, Light for a brighter one, or System Default to match your device's overall appearance.
5. Enjoy your new look! Your chosen theme will be applied immediately, transforming the app's interface.

Additional tips:

• Consider setting System Default if you prefer consistency with your device's theme.
• Explore both light and dark modes to see which one suits your preferences and viewing environment.