Do Not Peel It Off: iPhone Duo Inner Screen Protector Care Guide
How to clean and protect a flexible inner display, what to avoid, and when bubbles or lifting edges need professional inspection.

Why the inner surface is different
Flexible displays use a layered structure that bends thousands of times at the same point. A top film may be part of that engineered stack rather than an ordinary accessory. Pulling it away can place uneven force on the softer display underneath.
Use a clean microfiber cloth with very light pressure. Remove grit before wiping, avoid pushing a fingernail into the crease, and never close the phone with cards, keys or debris between the halves.
Our article on the crease and display finish explains why reflections and physical layers are separate issues.
What not to apply
Avoid unapproved glass protectors, adhesive films and harsh cleaners. A protector designed for rigid glass may resist bending or transfer stress to the fold. Follow current cleaning instructions and use only a slightly damp cloth when appropriate.
When to seek service
A speck on top differs from a bubble growing beneath a layer, an edge that keeps lifting, dead pixels or clicking at the hinge. Stop folding repeatedly if damage spreads and document it with photos.
For protection beyond the display, see our case guide and setup checklist. We will update this page with verified instructions rather than assuming advice for another foldable applies unchanged.
Spotted something to fix, or an app we should cover?
This article is independent research, cross-checked against Apple's developer documentation. If something's out of date, or you know an app that deserves a look, let us know — and if you're building for iPhone Duo yourself, we're happy to talk.
hola@ayudantedigital.es