Galaxy S25 Ultra — Screen Size, Resolution & PPI

What these specs mean

At phone viewing distance (around 15 cm / 6 inches), pixel density is the first thing you notice — above 300 PPI individual pixels disappear and text looks printed rather than pixelated. Refresh rate controls how smooth scrolling and games feel: 60 Hz is the long-standing baseline, 90–120 Hz noticeably cuts motion blur, and LTPO OLED panels can ramp from 1 Hz up to 120 Hz to save battery on static content. OLED's per-pixel contrast also makes blacks look genuinely black, which matters for dark-mode reading and overall battery behavior.

Samsung's flagship phones and tablets use Dynamic AMOLED 2X panels with adaptive refresh up to 120 Hz and peak brightness comfortably above 1,500 nits on Galaxy S and Tab Ultra devices. The same Samsung Display factory supplies OLEDs to other brands, so Galaxy hardware usually sees the newest panel generation first.

Frequently asked questions

What is the pixel density of the Galaxy S25 Ultra?

The Galaxy S25 Ultra has a 505 PPI pixel density on its 6.9-inch display — high enough that individual pixels are indistinguishable at typical viewing distance. Combined with the screen's Dynamic AMOLED 2X technology, this determines how sharp text and images actually render.

When was the Galaxy S25 Ultra released?

Samsung launched the Galaxy S25 Ultra in Feb 2025. Release date matters when checking software support windows: most manufacturers commit 5–7 years of security updates and 3–5 years of major OS upgrades from launch.

What operating system does the Galaxy S25 Ultra run?

The Galaxy S25 Ultra ships with Android. Samsung typically delivers OS updates over-the-air — check the device's Settings app or Samsung's support page for the latest available version.