Follow these steps to change the default Life Companion text that displays on the Galaxy S4's lock screen:
1. Place your finger on the Life Companion text and swipe downward.
2. Tap the pencil icon to enter edit mode.
3. Edit the text to your liking. You can also edit font type and color.
4. Tap the Done key.
5. Tap the Save button
1. Open Settings
2. Tap My device
3. Tap Lock screen
4. Tap Lock screen widgets
5. Modify to your liking.
Note: If you're interested in downloading the wallpaper shown in the screenshots, please visit The Android Channel Gallery