# Early folding smartphones had a very visible crease.

*business · news · 2026-04-13 · 9to5Mac*

## Key points

- Apple's foldable iPhone will likely launch this year as the iPhone Ultra.
- Apple solved the crease issue using multiple innovations, including a hi-tech optically clear adhesive (OCA).
- The OCA glue remains liquid enough to fill microscopic irregularities, minimizing visible creases.
- Apple's patents reveal a variable thickness ultra-thin glass design for improved bendability and impact resistance.
- TrendForce predicts Apple will capture about 20% of the foldable smartphone market this year.

**Companies:** Apple, Samsung
**Countries:** United States, South Korea

[Read the full story on 9to5Mac](https://9to5mac.com/2026/04/13/trendforce-says-hi-tech-glue-could-be-key-to-an-invisible-crease-in-the-iphone-ultra/)

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