Updated October 18, 2026: Removed the incorrect One UI 5-or-lower restriction and added version-aware creation and recovery steps.
Theme Park is a Good Lock Labs customization app for supported Samsung Galaxy devices. It can help build themes using colors from a wallpaper and adjust supported interface elements. Check the official store listing on your own phone: availability and features depend on the device, region and installed One UI/app versions.
Install the supported app
Open Samsung’s official Galaxy Store listing for Theme Park, or locate it through Good Lock where available. Confirm the developer and read the compatibility information. Do not install an unknown APK because another person’s phone shows a feature yours does not.
The old statement that Theme Park is restricted to One UI 5 or lower is not a dependable current compatibility rule. Use the live listing and your device’s update information instead of a blanket cutoff.
Create a theme you can actually read
- Open Theme Park and choose the theme section or customization category you want to change.
- Select Create new or the equivalent control shown in your installed version.
- Choose a wallpaper or image when prompted. Review the suggested color palette rather than accepting every color automatically.
- Preview supported screens and adjust text/background contrast, icons and other available elements.
- Save or install the theme with a recognizable name, then apply it through the available Theme Park or themes control.
The exact screen sequence can change. A category for icons, keyboard or Quick Panel may have its own save/apply process, and its availability should not be assumed on every device.
Test more than the home screen
Check notifications, settings, the keyboard and apps you use in both light and dark conditions. A colorful preview can hide low-contrast text or an icon that becomes hard to distinguish. Keep a simple default theme available while experimenting.
Not every third-party application will adopt every theme element. Some apps use their own colors and layouts. Do not grant unrelated permissions or install extra software merely to force every app to look identical.
If the result looks wrong
Return to the supported theme controls and apply the default or a known-good saved theme. Check whether another icon pack or customization module is changing the same element. Update Good Lock/Theme Park through their official source, then re-create only the affected customization if necessary.
After a major One UI update, review saved themes before assuming they remain visually identical. Keep your chosen wallpaper backed up, and avoid resetting the whole phone as the first response to an unreadable color combination.
Customization can refresh how an older Galaxy feels, but it does not extend that phone’s security-support period or repair an aging battery. If you are considering replacing an A52, compare currently supported upgrade options separately from theme changes.