Samsung Galaxy S25 Ultra

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Samsung Galaxy S25 Ultra

Samsung Galaxy S25 Ultra is Samsung's 2025 flagship smartphone, announced January 22, 2025 and released February 3, 2025. It is powered by the Qualcomm Snapdragon 8 Elite for Galaxy, a custom 3 nm variant of Qualcomm's top mobile SoC. The S25 Ultra is the primary hardware target for the ExecuTorch hackathon and represents Samsung's most capable on-device AI platform, with the Hexagon NPU enabling features that previously required cloud processing to run entirely on the device.

General
Release date	3 Feb 2025
Developer	Samsung Electronics
Type	Flagship Android Smartphone
License	Commercial device; developer tools available
Documentation	developer.samsung.com
OS	Android 15, One UI 8 (7 major Android upgrades promised)

Core Features

Snapdragon 8 Elite for Galaxy — Qualcomm's 3 nm SoC with Oryon V2 CPU cores (up to 4.47 GHz) and Hexagon NPU; 40% faster AI task handling and 45% better performance-per-watt vs. Snapdragon 8 Gen 3 (S24 Ultra).
On-device Galaxy AI — Generative Edit, live call transcription, 20-language translation, and Writing Assist run locally on the Hexagon NPU, not in the cloud.
Personal Data Engine — on-device engine that analyzes Samsung native-app data to personalize AI features; all data stays local, encrypted in Knox Vault.
Knox KEEP — hardware-backed encrypted storage environments for AI data per application.
Google Gemini integration — Gemini handles cross-app agentic commands (Circle to Search, multi-step actions) via the side button.
S Pen — built-in stylus with S Pen Remote SDK for developers to build custom button-interaction features.
6.9-inch Dynamic LTPO AMOLED 2X — 120Hz, 1440 x 3120 resolution, 2600 nits peak, Gorilla Armor 2 glass.
12 GB / 16 GB LPDDR5X RAM — with 256 GB, 512 GB, or 1 TB UFS 4.0 storage.
USB-C 3.2 Gen 2 — with DisplayPort 1.2 for Samsung DeX desktop mode.

Galaxy AI Features

Feature	On-Device or Cloud	Description
Now Brief	On-device	Proactive personalized daily briefing on lock screen
Now Bar	On-device	Always-visible status for live tasks and ongoing activities
Generative Edit	On-device	AI photo editing (previously cloud-only on S24)
Audio Eraser	On-device	Remove specific ambient sounds from recorded video
Circle to Search	Google cloud	Detect phone numbers, emails, URLs in video/audio
Cross App Actions	Gemini cloud	Multi-step tasks via one natural-language command
Portrait Studio	Cloud	AI portrait modes (Sketch, Watercolor, Cartoon, 3D)
Call Transcript	On-device	Live call transcription with automatic note formatting
20-language Translation	On-device	Real-time spoken language translation
Writing Assist	On-device	Summarization, rewriting, and auto-formatting
ProScaler	On-device	40% AI-enhanced display upscaling
Multimodal Settings	On-device	Natural-language device settings control

Tools and Resources

Samsung Developer Portal — developer.samsung.com — SDKs, Code Labs, Remote Test Lab, and community support.
Galaxy On-Device AI Partner Portal — aisdk.developer.samsung.com — access to the Samsung AI SDK for building on-device AI features (application-based).
S Pen Remote SDK — build custom interactions triggered by S Pen button gestures.
Remote Test Lab — test your app on real Galaxy S25 Ultra hardware without owning a device.
Knox Documentation — docs.samsungknox.com — enterprise security APIs and Galaxy AI data processing policies.
SDC24 on-demand sessions — developer.samsung.com/conference/sdc24 — Galaxy AI, Knox AI, and on-device inference deep dives.

Ecosystem and Integrations

ExecuTorch (Meta/PyTorch) includes an alpha Samsung Exynos NPU backend; Snapdragon 8 Elite is supported via the stable Qualcomm AI Engine backend.
Llama 3.2 1B and 3B quantized models achieve over 40 tokens/s decode and over 350 tokens/s prefill on the Galaxy S24+ (Snapdragon 8 Gen 3); the S25 Ultra's Snapdragon 8 Elite delivers further improvements.
Google Gemini is the primary agentic AI runtime on Galaxy S25 Ultra, enabling cross-app automation and visual search via Circle to Search.
Samsung DeX turns the S25 Ultra into a desktop workstation when connected to a monitor via USB-C, useful for developer productivity.

Start building for Galaxy S25 Ultra at developer.samsung.com or request Samsung AI SDK access through the Galaxy On-Device AI Partner Portal.

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Samsung Samsung Galaxy s25 ultra AI technology Hackathon projects

Discover innovative solutions crafted with Samsung Samsung Galaxy s25 ultra AI technology, developed by our community members during our engaging hackathons.

EchoWalk: On-Device Guidance for Low-Vision Users

Imagine walking through an unfamiliar room with your eyes closed. You need to know what is ahead, what is around you, and how to reach the chair someone mentioned — without cloud latency or sending your camera feed anywhere. EchoWalk is built for that moment. On a Galaxy S25 Ultra, one shared camera pipeline feeds a central ModeManager that decides when to warn, when to describe, and when to search — all on the Snapdragon NPU via ExecuTorch and Qualcomm QNN. Safety Radar runs continuously. Depth Anything V2 and YOLOv10 fuse on the Hexagon NPU: not just what is there, but how far and whether it is a trip hazard or a wall you can trail. Spatial audio and haptics place obstacles in space; a VoiceWarningEngine speaks when it matters. A live bounding-box overlay helps sighted helpers follow along in demos. Scene Description is on demand — tap the preview, the Describe button, or long-press Volume Up. A short burst of frames runs through a Places365 classifier and pairs the room label with live YOLO directions: "You appear to be in a living room — couch on your left, TV ahead." Auto-describe announces stable scene changes hands-free. The full SmolVLM-500M stack is integrated and validated through handoff scripts; richer VLM captions are ready for the next aligned build. Find Mode is voice-first. Long-press Volume Down, say "find the bottle," and the app maps your words to everyday object labels. It scans the room, guides you turn by turn, warns about obstacles in your path, highlights the target on screen, and remembers where it last saw it so the next search starts with a hint. Accessibility is front and center: lock-screen access, screen-on at launch, spoken onboarding with a first orientation from live radar, eyes-free volume shortcuts, and double-tap to repeat your last description. No cloud. No upload. Your home never leaves your pocket.

SixthSense: Haptic Vision for the Blind

SixthSense is a wearable that helps blind and low-vision people sense obstacles around them and find a clear path. A phone is mounted on the chest and watches the way ahead. On-device models turn what the camera sees into a simple readout: how near obstacles are in the left, center, and right zones, what objects are present, and whether the path is clear. That readout drives a vibration belt worn at the waist, which buzzes on the side of the nearest obstacle so the user can feel which way to move. The point is that knowing something is close is not enough. A basic vibrating cane buzzes whenever anything is near, so in a crowd it buzzes constantly without telling you where the gap is. SixthSense reads each zone separately and steers the user toward open space, so it stays useful in busy areas. The user can also ask what is ahead and hear a short spoken answer, or point the camera at a sign and have its text read aloud. The vision runs on the phone. YOLOv11n detects objects and tags each to a left, center, or right zone. Depth-Anything-V2 estimates how near things are, which sets how hard the belt buzzes. Qwen2.5-0.5B answers spoken questions about the scene, and ML Kit reads text on demand. The models run through ExecuTorch as compiled files on the phone, offline, on a Qualcomm Snapdragon 8 Elite, with the option to run on the Hexagon NPU. The phone sends a small directional packet over Bluetooth to an ESP32, which drives the belt motors. Cost is the main reason it exists. Smart canes and glasses run from about $850 to over $2,000, and only one in ten people who need assistive technology can get it, dropping to about five percent in lower-income countries. SixthSense uses a phone the user already has and a sub-$20 belt, with room to reach about $50 at scale, putting this within reach of people who are priced out today.

Lodestar — Offline AI Survival Copilot

GPS denial is no longer rare: Poland logged 2,732 jamming incidents in one month in early 2025, and an EU Commission President's plane lost GPS near Bulgaria and landed on paper maps. When navigation fails, everything built on top tends to fail at once including medical guidance, since most first-aid apps assume connectivity that may not exist when it matters most. Lodestar is an offline, on-device AI survival copilot built for that moment. It runs on Snapdragon hardware via ExecuTorch, requesting no INTERNET permission at all, across three capabilities: TREAT — describe an injury by voice or text and get a severity-ranked, source-cited first-aid response. Severity comes from a deterministic safety-tree engine, not the language model, so the system can't be talked into downgrading a critical call by ambiguous phrasing. The model explains and cites a TCCC/MARCH corpus but cannot override the verdict underneath. We tested negation handling ("hasn't stopped" vs. "has stopped now"), the failure mode that matters in the field — and caught and fixed a real bug here during testing. ORIENT — true north without a satellite. By day, a solar compass derives heading from the sun's position, verified against documented sunrise, sunset, and solar-noon directions. By night, on-device star plate-solving matches a photographed sky against a catalog. A status strip shows the active position source — GPS_TRUSTED, DEAD_RECKONING, SOLAR_FIX, or STAR_FIX — and flips in real time if GPS is spoofed, freezing to the last trusted fix. COMMUNICATE — medic-casualty translation plus a one-tap SOS card from the TREAT conversation. Every model-backed capability sits behind one interface, so the app was built and tested against a stub before the real models landed swapping to production is a one-line change. We're upfront about what's tested today (safety tree, solar math, spoof detection all pass automated tests) versus what's in progress (corpus coverage, runtime integration)

Sub Rosa: On-Device AI Legal Intake

Sub Rosa is an Android app that turns a lawyer's first client meeting into clear intake notes. It runs entirely on the phone and never goes online. It records the conversation and transcribes it on the device with Whisper. A small language model, Qwen3-1.7B running with ExecuTorch on the Qualcomm Hexagon NPU, then produces three things: the facts, each shown next to the exact words from the transcript that back it up; the missing items, the standard intake points the client did not mention, found by comparing the talk against a checklist; and a few neutral follow-up questions to ask. The model only reads and sorts what it is given. It never states the law or gives advice. The legal knowledge lives in checklists written by people, not in the model's weights, so a small model stays accurate with no training step. Privacy is built in. The app has no internet permission, so the phone blocks any connection, and an on-screen panel shows nothing was sent. Audio is never saved, and all client data is encrypted on the device with AES-256-GCM.

Insight

The race to train foundational Vision-Language-Action (VLA) models and embodied AI relies heavily on teleoperation and egocentric video. The most cost-effective data pipeline involves filming humans performing physical tasks and mapping those movements to robots. However, this method suffers from a massive, expensive flaw: human hands frequently drift out of the headset’s field of view (FoV). Because ML models require continuous visual tracking to learn, millions of dollars are currently wasted on "blind data"—trajectories that are completely useless for training because the hands aren't visible. InSight solves this multi-million dollar data leak directly at the source. We have developed an ultra-lightweight, on-device computer vision pipeline optimized for rapid edge inference on spatial computing hardware. By deploying the MediaPipe Hand Detection model via Qualcomm's AI Hub, our system runs entirely locally with zero cloud latency. The model continuously tracks hand presence, precise coordinates, and visibility margins within the frame in real time.

OBSERVA

OBSERVA is a privacy-first AI mobility assistant designed for blind and low-vision users who need safe, reliable navigation support in everyday environments. Unlike many tools that depend on cloud processing, OBSERVA is built to run core safety features fully on-device, including in airplane mode, so users can rely on it in low-connectivity settings and for sensitive private contexts. Our current Android prototype uses a continuous CameraX loop with low-latency audio and haptic alerts, a hazard engine with cooldown and scene memory to avoid repetitive alert spam, and an accessibility-focused interface optimized for non-visual interaction. The product direction includes robust object recognition, hazard detection, contextual navigation assistance, and multilingual interaction/translation pathways while maintaining strict local processing guarantees. We position OBSERVA in a gap between pure OCR/vision apps and infrastructure-dependent systems (e.g., code-tag ecosystems), focusing on independent mobility, comfort, and trust. Our core value proposition is simple: private, offline, safety-oriented assistive intelligence that is usable in the real world, not just in ideal network conditions.