The Tool Desk
Outbyte Driver Updater FREEFix the driver behind crashes, sound loss and screen glitchesFind Drivers →Outbyte PC Repair FREEClear out junk files and repair common Windows errorsFree Scan →LG’s Rollable was a smartphone prototype planned for 2021, not a phone that reached stores. A teardown by JerryRigEverything reveals how it expanded its OLED screen: two geared motors drove a sliding frame, while spring-loaded arms supported the display as it unrolled. The design promised about 40% more viewable screen area without the crease associated with a conventional foldable, but its intricate moving parts also made it a difficult product to manufacture and protect.
How the LG Rollable expanded its screen
Unlike a book-style foldable, the Rollable kept its flexible OLED wrapped inside the phone until the user asked for more screen. The display assembly extended sideways with the help of a motorized frame. JerryRigEverything’s teardown shows that the motion depended on several parts working together, rather than on the screen simply sliding out on its own.
Motors, tracks and interlocking teeth
Two small geared motors moved the frame along tracks. Zipper-like teeth helped keep the display assembly engaged as it traveled, coordinating the screen’s movement with the frame. That arrangement allowed the phone to expand and retract mechanically instead of bending around a fixed hinge.
Arms supported the flexible panel
Three spring-loaded articulating arms supported the OLED as its shape changed. The screen therefore needed both flexibility and a moving support structure: the arms had to accommodate the changing panel position while helping it remain supported during extension and retraction.
Crashes, No Sound, or Screen Glitches?
Random freezes, missing sound and display glitches usually trace back to one bad driver. Find and replace yours safely.Free scan · under a minuteWindows Errors? Fix Them Before They Spread
Repair common Windows errors and clear accumulated junk for a smoother, more stable PC - no reinstall needed.Free scan · no reinstall#1 Best Overall
- This device is unlocked for T-Mobile / Sprint and will work with T-Mobile, Sprint, but is not compatible with Cricket or any other CDMA network. Not compatible with AT&T 5G network. ***
- This model does not support AT&T 5G network. ***
- Ships in non-retail box; generic charger and USB cable only. Not including other accessories.
- Condition: Certified Refurbished, may have some minor scratches or scrapes.
Dust management and software mattered, too
Internal bristles helped keep dust away from the moving parts. The phone also used a chime to mask the sound of the motor. These details show that the engineering challenge extended beyond making the display move: LG had to account for debris, operating noise and the way the mechanism felt in everyday use.
It was more than a screen demonstration
TechSpot’s 2026 reporting lists a Qualcomm Snapdragon 888 processor, 12GB of RAM, a 4,500mAh battery and a 64-megapixel main camera. Those reported specifications suggest a concept built around near-flagship phone hardware rather than a display-only mock-up.
The teardown also shows a sliding battery-and-motherboard tray. That means the expanding screen affected the layout of the phone’s internals, not just the outer frame. The motors, rails, supporting arms, flexible display and sliding internal assembly all had to coexist inside one handset.
What the rollable changed—and what it added
A rollable and a conventional foldable solve the problem of getting more screen from a phone-sized device in different ways. A foldable bends its display around a hinge; the LG prototype instead extended a flexible display from the side. The trade-off is not simply “no crease”: a mechanism that moves the screen introduces its own demands for space, protection and reliable operation.
What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
Rank #3
- Unlocked for GSM Carriers such as: T-Mobile and AT&T | Will NOT work with CDMA carriers: Sprint and Verizon
- 6.5" HD+ FullVision, Narrow Notch Display
- Easy-to-use Rear Triple Camera System
- 13MP PDAF Standard Angle Rear Camera | 5MP Super Wide 115° Rear Camera | 2MP Depth Camera
| Comparison point | LG Rollable prototype | Conventional foldable comparison |
|---|---|---|
| How the screen moves | Motorized frame extends the flexible OLED along tracks. | Display folds around a hinge. |
| Crease visibility | Ars Technica reported about 40% more viewable area without the crease associated with a conventional foldable. | A crease is the comparison point in Ars Technica’s description; the cited reporting does not quantify its visibility across foldable models. |
| Dust and durability exposure | Internal bristles address dust near the moving parts, but the cited reports do not provide a controlled durability test or failure rate. | Not established for foldables as a category by the cited reporting. |
| Thickness and weight | Not stated in the cited reporting. | Not stated in the cited reporting. |
| Screen-area gain | About 40% more viewable area, as reported by Ars Technica in 2026. | Not stated in the cited reporting. |
| Operating noise | A software chime was used to mask motor noise, according to the teardown coverage. | Not stated in the cited reporting. |
| Repairability and manufacturing cost | The teardown reveals a complex mechanism; Ars Technica and TechSpot discuss cost and damage concerns, but no retail price or repairability test is reported. | Not established for foldables as a category by the cited reporting. |
The table describes what the available reports establish about this prototype; it is not a controlled test of rollables against retail foldable phones.
Why LG’s Rollable was ill-fated
In 2021, an LG representative told Android Authority: “Not sure how authentic those images are but neither device will be developed any further.” That statement ended the prospect of the Rollable becoming the planned 2021 product. It was never released as a retail phone.
Rank #4
- 3.0" WQVGA TFT Color LCD Display (400 x 240) pixels
- Battery 1470 mAh
- Camera 5 MP
- Memory 8 GB Expandable Memory Supports up to 32GB microSD Card (sold separately)
- Weight 4.59 oz Height 4.44 in Width 2.13 in
The teardown helps explain why the concept could be difficult to turn into a commercial device. Every motor, track, gear, spring-loaded arm, dust barrier and flexible-display interface adds assembly work and another component that must keep functioning as the phone moves. Ars Technica connected that complexity to likely high manufacturing costs and durability concerns; TechSpot likewise highlighted the challenge of scaling production and the phone’s vulnerability to damage.
Those are analyses of the design, not a published LG cost model. The cited reports do not establish a unit price, production volume, failure rate or market-share figure, so none can be used to quantify whether the phone would have been commercially viable.
What the teardown ultimately shows
LG’s Rollable was an ambitious attempt to make a phone’s display expand without folding it in half. Its motors, guided frame, articulating supports, dust-management features and near-flagship reported specifications make the prototype a substantial engineering effort. The same complexity that made the mechanism compelling also made it a harder product to manufacture and protect. It remains a striking example of a phone design that was demonstrated but never released.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
