One UI Good Lock Features: What’s New

Good Lock is Samsung’s official customization suite for One UI, and it is getting a steady stream of new modules and features that let you tweak everything from the lock screen to the navigation bar. The most game-changing additions in recent One UI versions are the full-screen lock screen editor in Wonderland, the per-app sound output control in Sound Assistant, and the new MultiStar I Love Galaxy Foldable features that let you force apps to use the full cover screen. These tools go far beyond simple theme changes, giving you deep control that most Android skins simply do not offer.

What Exactly Is Good Lock?

Good Lock is a free app made by Samsung that acts as a hub for a collection of small utility apps (called modules). Each module customizes a specific part of the One UI experience. You install Good Lock from the Galaxy Store, then download the modules you want. It has been around since 2016, but Samsung has been actively updating it with new modules and features for One UI 6 and One UI 7 (Android 14 and 15).

Because Good Lock is designed specifically for Samsung devices, it is not available on other Android phones. It is also region-locked in some countries, so if you cannot find it in the Galaxy Store, you may need to use the APK from a trusted source or check if your region supports it.

The Lock Screen Gets a Real Editor

One of the most requested features has been a proper lock screen editor, and Good Lock now delivers it through the Wonderland module. This is not just a wallpaper picker; it lets you:

• Add multiple clock styles, including a large digital clock, an analog clock, and a world clock.
• Place the clock anywhere on the screen, not just the default position.
• Add a custom shortcut to the bottom left and bottom right corners (like the flashlight or camera).
• Apply a depth effect to your wallpaper so the clock appears behind the subject of the photo.
• Set a different lock screen wallpaper from the home screen wallpaper, and even apply a parallax effect when you tilt the phone.

You access this by opening Good Lock, going to Wonderland, and then choosing “Lock screen.” The changes apply instantly, and you can preview them by pressing the power button.

Per-App Sound Control (Sound Assistant)

Sound Assistant has been around for a while, but the latest versions add a feature that truly changes how you use audio on your phone: per-app volume. You can now set a different volume level for each app that is playing sound. For example, you can keep your music player at 80% volume while your navigation app is at 50%, so the directions do not blast over your music.

To use it, open Sound Assistant, enable “Individual app volumes,” and then adjust the sliders for each app that is currently playing audio. This works with any app that outputs sound, including YouTube, Spotify, games, and even system sounds. It is a huge quality-of-life improvement if you frequently switch between media and calls.

MultiStar: Force Full-Screen on Foldables and Pop-Up Apps

MultiStar is the module that gives you control over multi-window and pop-up view behavior. On foldable phones like the Galaxy Z Fold series, MultiStar includes the I Love Galaxy Foldable sub-menu, which lets you force any app to use the full cover screen, even if the app is not optimized for it. This is a game-changer for using apps on the front display without the awkward letterboxing.

For non-foldable phones, MultiStar also adds a feature called “Multi-View” that allows you to open any app in a pop-up window by swiping in from the corner. You can also customize the pop-up window’s transparency, size, and whether it stays on top of other apps. These are small tweaks, but they make multitasking feel far more fluid.

Navigation Bar and Gesture Tweaks (NavStar)

NavStar is the module that lets you customize the navigation bar. With One UI 6 and later, you can:

• Add a button to the navigation bar to quickly switch between the gesture and button modes.
• Change the order of the buttons (if you use the three-button layout).
• Set the gesture hint to be transparent, so you do not see the white bar at the bottom.
• Add a “double tap to sleep” action to the navigation bar.

These options are not available in the standard Settings app, so Good Lock is the only way to get them. For people who miss the old physical buttons, this is a welcome return.

How to Get Good Lock and Which Modules to Choose

Good Lock is available in the Galaxy Store on Samsung phones running One UI 5 or later. If you do not see it, your region may not support it. In that case, you can sideload the APK from a trusted site like APKMirror, but be aware that some modules may not work properly if they are not officially supported in your region.

When you open Good Lock, you will see a list of modules. The most useful ones for most people are:

• LockStar – For lock screen clock styles and shortcuts (now merged into Wonderland in newer versions).
• QuickStar – For customizing the quick settings panel and status bar.
• Sound Assistant – For per-app volume and advanced sound controls.
• NavStar – For navigation bar customization.
• MultiStar – For multitasking and foldable display options.
• Home Up – For home screen grid sizes, folder customization, and task changer.

You do not need to install all of them; pick the ones that match what you want to change. Each module is free, but they are only available for Samsung devices.

Common Problems and Fixes

Some users report that Good Lock modules do not appear after a system update. This is usually because the module needs to be updated to match the new One UI version. Open the Galaxy Store, go to “Updates,” and update all Good Lock modules. If that does not work, try clearing the cache of the Good Lock app itself.

Another issue is that some features are not available on older devices. For example, the full-screen cover screen feature in MultiStar only works on foldable phones. If you do not see a feature mentioned in a tutorial, check if your device supports it.

Finally, if you are using a non-Samsung phone, Good Lock will not install. There are third-party apps that mimic some features, but they are not official and may not work reliably.

Frequently Asked Questions

Is Good Lock free?
Yes, Good Lock and all its modules are free to download from the Galaxy Store. There are no in-app purchases or ads.

Does Good Lock work on all Samsung phones?
Good Lock works on most Samsung phones running One UI 5 or later, but some features are exclusive to newer devices or foldables. For example, the cover screen customization only works on the Galaxy Z Flip and Z Fold series.

Will Good Lock drain my battery?
Good Lock modules are lightweight and should not have a noticeable impact on battery life. However, features like the lock screen depth effect or the parallax wallpaper use a bit more GPU, so you may see a small decrease in battery if you use them heavily.

Can I use Good Lock without rooting my phone?
Yes, Good Lock is an official Samsung app that works without root. It uses Samsung’s own APIs, so it is safe and does not void your warranty.

Why can’t I find Good Lock in the Galaxy Store?
Good Lock is not available in all regions. If you cannot find it, you can try downloading the APK from a trusted source, but some modules may not work if your region is not supported. Alternatively, you can use a VPN to access the Galaxy Store in a supported region, but that is not a guarantee.

Does Good Lock work on One UI 7 (Android 15)?
Yes, Samsung has updated Good Lock to support One UI 7. However, some older modules may have been merged or renamed. Always update to the latest version from the Galaxy Store to get the newest features.

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