Galaxy S26 Ultra: don't buy one. Use the built-in Privacy Display, as Samsung advises. Other Galaxy S phones: full-adhesive two-way privacy glass works, then re-register your fingerprints. Galaxy A phones with an in-display reader: privacy glass can interfere with the optical sensor, so read owner reviews for your model first.
By Galaxy model
| Phone | Privacy protector? | Why |
|---|---|---|
| Galaxy S26 Ultra | No | Built-in Privacy Display; Samsung advises against third-party privacy protectors |
| S26, S26+, S25, S24 series | Yes | Ultrasonic sensor reads through; use full adhesive |
| Galaxy A with in-display reader | Check listing | Optical sensor may be slowed by the filter |
| Z Fold / Z Flip cover screens | Yes | Side-key fingerprint, so no conflict |
Using the S26 Ultra's Privacy Display instead
Open the Quick Panel and tap Privacy display, or go to Settings → Display → Privacy Display. Unlike a filter, you can apply it only to certain apps or parts of the screen, and switch it off to share photos.
Fitting privacy glass on a Galaxy
Privacy glass shows dust and bubbles more than clear glass, so fit it in a steamy room with a tray. Then delete and re-register your fingerprints. If the screen feels too dim, see privacy protector too dark.
Questions people ask
Does the Galaxy S26 Ultra need a privacy screen protector?
No. It has a built-in Privacy Display, and Samsung's support page advises avoiding third-party privacy protectors.
Do privacy protectors stop Samsung fingerprint sensors working?
On S-series ultrasonic sensors, generally not if the glass has full adhesive. Optical sensors on some A-series phones can struggle.
Sources
Facts on this page were checked against these sources on 14 September 2026: