Of everything in the iPhone Duo, the piece rivals want first is an animation. Fold or unfold the phone and the screen blurs through the transition while apps and the Home Screen hold their place, so the glass seems to reorient around them, in 9to5Google's description. MKBHD, setting the iPhone Duo against the Z Fold 8, picked the same effect, and how fast the cover screen wakes, as the thing that made Apple's foldable feel different.
It took less than a day to copy, sort of. A developer posted a proof of concept to r/GalaxyFold that reads the Galaxy Z Fold 8's hinge-angle sensor and scrubs a shader blur between two screenshots as the phone opens, so the effect tracks the hinge in real time. SamMobile's caveat is the whole story: Samsung doesn't expose the access a third-party app would need, and the developer calls it "a proof-of-concept, not a real launcher."
The bigger claim comes from China and rests on less. Notebookcheck, citing a Weibo leaker, reports that domestic foldable makers are studying the animation and that one has apparently already built it into a device, though nobody named a maker or a model.
9to5Google's read is the useful counterweight. The Duo didn't reinvent Android foldables, which had the wide aspect ratio and split screen first, and the animation is about the only thing on it the site thinks worth copying. Its worry is rivals copying the wrong part: the controls Apple moved to the side rail, which leave left-handed users reaching across the phone. MKBHD found no setting to move that dock to the left.
If Android takes one idea from the Duo, the animation is the right pick: it's software, and the hinge sensor it needs already ships in the Fold 8. The sidebar I'd leave on Apple's side of the fence.
