The Unreleased Rollable Smartphone!

TL;DR

LG's unreleased rollable phone expands from 6.7 to 7.4 inches via a three-finger swipe, showcasing ambitious engineering LG couldn't survive long enough to ship.

Key Points

• 1.LG's rollable phone expands from a 6.7-inch slab to a 7.4-inch tablet using a three-finger swipe gesture. Two internal motors and three spring-loaded arms drive the mechanism, with a masking sound played through speakers to cover motor noise.
• 2.The extra display wraps around the back of the phone in clear glass, enabling unique software tricks. The back screen can show messages or camera UI, allowing selfies using the primary 64MP main and 12MP ultrawide rear cameras.
• 3.LG's software development was remarkably advanced for an unreleased device. Features include a blooming flower lock screen animation, a multi-column settings app that dynamically adjusts when rolling open or closed, and multiple selectable motor-masking sound profiles.
• 4.The phone has notable engineering trade-offs including no water or dust resistance and a minor crease. Gear teeth and air gaps are visible when open, the flexible display is constantly exposed, and there is a slight wave rather than a true crease — less than folding phones but not absent.
• 5.Dbrand provided access to this functional prototype, which includes 12GB RAM and a 4,500mAh battery but was never named or priced. Samsung is also rumored to be developing a rollable smartphone, potentially releasing one soon.