TL;DR
A Good Lock module called One Hand Operation+ adds customizable edge handles and multi-direction gestures to make large Samsung phones easier to use, while RegiStar maps firm taps on the back of the phone to shortcuts. The tools require an initial learning period but, in the author’s experience, quickly become indispensable.
What happened
Ben Khalesi of Android Police says modern large phones — exemplified by the 6.9-inch Galaxy S25 Ultra — are awkward to operate one-handed. He turned to Samsung’s Good Lock suite, specifically One Hand Operation+, to reclaim usable reach on big screens. One Hand Operation+ places configurable gesture handles along the screen edges, detecting angle and swipe length to turn three base directions (straight inward, diagonal up, diagonal down) into six distinct inputs. Khalesi narrowed trigger zones to reduce accidental back swipes, assigned diagonal-up to open Recent Apps and diagonal-down to pull the notification shade, and used a long swipe (around 300 ms) to open Quick tools with system toggles. He also used RegiStar to enable back-tap shortcuts that rely on the phone’s gyroscope and accelerometer, mapping double and triple taps to actions like launching Samsung Wallet and taking screenshots. Good Lock was previously region-restricted but has become more widely available in newer One UI releases. The author notes a steep initial learning curve but says that after a few days the custom setup became essential.
Why it matters
- Addresses real ergonomics problems on large-screen phones by bringing frequently used actions into thumb reach.
- Reduces accidental gestures and app exits by letting users control trigger zones and gesture sensitivity.
- Turns hardware and software inputs into concise shortcuts, potentially speeding common tasks without leaving apps.
- Highlights customization features that some users and writers think could be integrated into One UI directly.
Key facts
- One Hand Operation+ is a Good Lock module that adds configurable edge handles for thumb gestures.
- The module interprets angle and swipe length, converting three gesture directions into six distinct inputs.
- Users can reposition or narrow trigger zones to avoid accidental back swipes.
- Diagonal-up and diagonal-down gestures can be mapped to actions such as Recent Apps and the notification panel (author’s setup).
- A long swipe (about 300 ms) can be set to open Quick tools with toggles like Wi‑Fi and Bluetooth and other system actions.
- RegiStar uses the device’s gyroscope and accelerometer to detect firm taps on the phone’s back as shortcut inputs.
- The author mapped a double back tap to Samsung Wallet and a triple tap to take a screenshot.
- Good Lock was once region-restricted and required workarounds like VPNs, SIM tricks, or sideloading for some users; Samsung has expanded availability in newer One UI releases.
- The author reports a steep learning curve but says the custom gestures became indispensable after a few days of use.
What to watch next
- Whether Samsung will fold One Hand Operation+ features into the default One UI experience — not confirmed in the source
- Further changes to Good Lock availability or distribution in One UI updates — not confirmed in the source
Quick glossary
- Good Lock: An optional Samsung customization suite that adds modules for UI tweaks and advanced features.
- One Hand Operation+: A Good Lock module that places customizable gesture handles on screen edges and maps swipes to system actions.
- RegiStar: A Good Lock module that turns physical taps on the phone’s rear into shortcut inputs using motion sensors.
- Quick tools: A compact shortcut panel that provides fast access to toggles and common system actions.
Reader FAQ
Is Good Lock available everywhere?
Samsung expanded Good Lock availability in newer One UI releases; it was previously region-restricted and sometimes required workarounds.
Does One Hand Operation+ eliminate accidental back swipes?
You can reduce accidental back gestures by narrowing or repositioning trigger zones and customizing sensitivity.
How long does it take to get used to these tools?
The author reports a steep learning curve but says about three days of use before the setup felt indispensable.
How does RegiStar detect back taps?
RegiStar uses the phone’s gyroscope and accelerometer to detect firm taps on the rear casing.
The Good Lock module I forced myself to learn — and now can't use a Galaxy without By Ben Khalesi Published 34 minutes ago Ben Khalesi covers the intersection of…
Sources
- The Good Lock module I forced myself to learn — and now can't use a Galaxy without
- Good lock win! One hand operation +
- One Hand Operation+ 8.3.19 Update Fixes Gesture Angle …
- Use one handed mode on your Galaxy phone
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