Samsung Galaxy S25 Ultra VS Xiaomi 17 Pro

Both phones share the same fundamentals in terms of durability: an IP68 waterproof rating, no rugged reinforcement, and a non-folding slab form factor. IP68 means both can handle submersion in fresh water at standard depths, which puts them on equal footing for everyday water exposure like rain or accidental splashes.

Where they diverge meaningfully is physical footprint. The Samsung Galaxy S25 Ultra is a noticeably larger device — 162.8 × 77.6 mm and a volume of roughly 103.6 cm³ — compared to the Xiaomi 17 Pro at 151.1 × 71.8 mm and about 86.8 cm³. That translates to a device that is significantly more compact and easier to grip or pocket. The weight gap reinforces this: the S25 Ultra tips the scale at 218 g, while the Xiaomi 17 Pro comes in at a considerably lighter 192 g — a 26 g difference that becomes very noticeable during prolonged one-handed use or extended sessions.

In this group, the Xiaomi 17 Pro holds a clear ergonomic edge: it is lighter, slimmer in width, and occupies substantially less volume, all without compromising on waterproofing. The S25 Ultra's larger size may suit users who prefer a bigger canvas, but purely from a design and handling perspective, the Xiaomi 17 Pro is the more pocketable and comfortable device to carry.

Both phones use OLED/AMOLED panels with a 120Hz refresh rate, damage-resistant glass, HDR10/HDR10+ support, and Always-On Display — so the baseline visual experience is strong on either device. The real divergence starts with screen size and resolution: the S25 Ultra carries a 6.9″ panel at 1440 × 3120 px and 498 ppi, while the Xiaomi 17 Pro opts for a more compact 6.3″ panel at 1220 × 2656 px and 464 ppi. In practice, the S25 Ultra's higher pixel density means marginally sharper text and fine detail, though both exceed the threshold where pixel-level sharpness is perceptible to the naked eye at normal viewing distances.

The Xiaomi 17 Pro counters with a couple of notable advantages. Its 300Hz touch sampling rate edges out the S25 Ultra's 240Hz, which translates to more responsive input during fast-paced gaming or precise stylus-like interactions. More significantly, the Xiaomi 17 Pro adds Dolby Vision support — a content certification absent on the S25 Ultra — meaning it can render Dolby Vision-mastered streaming content with its intended color grading and dynamic range. It also features a secondary screen, which, depending on implementation, can add utility for notifications or media controls without waking the main display.

The verdict here is nuanced. For raw screen real estate and pixel sharpness, the S25 Ultra has the edge. But the Xiaomi 17 Pro answers with Dolby Vision, a faster touch sampling rate, and a secondary display — features that add meaningful value for multimedia and interactive use cases. Users who prioritize a larger, sharper canvas will favor the S25 Ultra; those who stream Dolby Vision content or game competitively will find the Xiaomi 17 Pro's display feature set more compelling.

On paper, these two phones share a remarkable amount of silicon DNA: identical 3 nm fabrication, the same Adreno 830 GPU at 1200 MHz, matching memory bandwidth, cache hierarchy, and a 1024 GB storage ceiling. The S25 Ultra runs on the Snapdragon 8 Elite, while the Xiaomi 17 Pro steps up to the newer Snapdragon 8 Elite Gen 5 — a generational successor with meaningfully higher CPU clock speeds: 2 × 4.6 GHz peak cores versus 2 × 4.47 GHz on the S25 Ultra. That gap is modest in isolation, but its downstream impact on benchmarks is not.

The AnTuTu scores tell the sharpest story: the Xiaomi 17 Pro posts 3,691,009 against the S25 Ultra's 2,207,809 — a roughly 67% higher score. Even accounting for benchmark variability, a gap of this magnitude points to a genuine generational leap in sustained throughput, particularly in GPU-heavy and AI workloads. Geekbench 6 confirms the trend more modestly, with the Xiaomi 17 Pro ahead in both single-core (3234 vs 3057) and multi-core (10059 vs 9846) results. Additionally, the Xiaomi 17 Pro's 16 GB of RAM versus the S25 Ultra's 12 GB provides more headroom for aggressive multitasking and keeping more apps resident in memory simultaneously.

The Xiaomi 17 Pro holds a clear performance advantage in this group. The newer chipset generation, higher CPU clocks, larger RAM pool, and substantially higher benchmark throughput all point in the same direction. For users who push their devices hard — gaming, video editing, or AI-intensive tasks — the Xiaomi 17 Pro is the more capable machine based strictly on these specs.

The rear camera systems take fundamentally different approaches. The S25 Ultra deploys a 200 MP primary sensor alongside three additional lenses, giving it a significant resolution advantage for cropping, fine detail extraction, and large-format printing. The Xiaomi 17 Pro, by contrast, uses a more balanced triple 50 MP setup — trading the headline resolution for consistency across all three lenses. Both deliver identical 5× optical zoom and top out at 4320p @ 30 fps video, but the Xiaomi 17 Pro extends the focal range wider on the ultrawide end: 17 mm minimum versus 24 mm on the S25 Ultra, which is a meaningful difference for architecture, landscapes, and tight interior shots.

Two distinctions stand out beyond resolution. First, the Xiaomi 17 Pro supports Dolby Vision video recording — a feature the S25 Ultra lacks — making it the stronger option for users who want professional-grade HDR video compatible with Dolby Vision playback pipelines. Second, the front camera gap is substantial: the Xiaomi 17 Pro packs a 50 MP selfie sensor against the S25 Ultra's 12 MP, which translates to far greater detail, cropping flexibility, and low-light headroom in front-facing shots. The S25 Ultra does retain manual shutter speed control, which the Xiaomi 17 Pro omits — a minor but real limitation for advanced photographers shooting manually.

This group has no single clean winner — it depends on shooting priorities. The S25 Ultra holds the edge for rear camera versatility, particularly the 200 MP main sensor and broader manual controls. But the Xiaomi 17 Pro counters convincingly with a superior front camera, a wider ultrawide focal length, and Dolby Vision recording support, making it the stronger all-rounder for video creators and selfie-focused users.

The most clear-cut difference here is the Android version: the Xiaomi 17 Pro ships with Android 16 while the S25 Ultra runs Android 15. A newer base OS version generally means access to the latest platform security patches, API improvements, and system-level features from the outset — giving the Xiaomi 17 Pro a modest but real head start in software currency.

Beyond the version number, the feature split cuts both ways. The S25 Ultra offers cross-site tracking protection, focus modes, Wi-Fi password sharing, and the ability to be used as a PC — a desktop mode feature that can meaningfully extend the device's utility for productivity workflows. The Xiaomi 17 Pro lacks all four of these. Conversely, the Xiaomi 17 Pro omits cross-site tracking blocking, which is a minor privacy gap compared to the S25 Ultra. The remaining feature set — dark mode, dynamic theming, PiP, split screen, on-device ML, offline voice recognition, and the broader privacy controls — is essentially identical between the two.

On balance, the S25 Ultra holds a functional edge in this group. While the Xiaomi 17 Pro's newer Android version is a meaningful advantage in principle, the S25 Ultra compensates with a broader practical feature set — particularly desktop PC mode and focus modes — that adds tangible day-to-day utility. Users who prioritize OS freshness will lean toward the Xiaomi 17 Pro, but those who value feature depth in their software experience will find the S25 Ultra's offering more complete.

Few spec categories produce as lopsided a result as this one. The Xiaomi 17 Pro packs a 6300 mAh battery against the S25 Ultra's 5000 mAh — a 26% larger cell that, all else being equal, translates directly into more screen-on time before reaching for a charger. For heavy users, that gap can represent the difference between a phone that comfortably lasts a full day and one that does not.

The charging story is even more decisive. The Xiaomi 17 Pro supports 100W wired fast charging, more than doubling the S25 Ultra's 45W — meaning the Xiaomi 17 Pro can replenish its larger battery in roughly the same time or less than the S25 Ultra takes to charge its smaller one. The wireless charging gap is equally stark: 50W versus 15W, and reverse wireless charging follows the same pattern at 22.5W versus 4.5W. The S25 Ultra's reverse charging speed is so conservative that it is only practically useful for topping up accessories like earbuds; the Xiaomi 17 Pro's 22.5W makes it a genuinely viable emergency charger for other devices.

The Xiaomi 17 Pro wins this group decisively across every dimension — capacity, wired charging, wireless charging, and reverse charging. For users who prioritize battery endurance and charging flexibility, it is not a close contest.

Wired audio is off the table for both devices — neither includes a 3.5 mm headphone jack — so the comparison pivots entirely to wireless audio codec support and speaker output. Both phones offer stereo speakers, aptX, and aptX HD, establishing a solid shared baseline for Bluetooth audio quality over standard and high-definition wireless connections.

The divergence comes down to one codec each. The S25 Ultra supports LDAC, Sony's high-resolution wireless codec capable of transmitting up to 990 kbps — the gold standard for audiophiles using LDAC-compatible headphones, particularly Sony's own lineup. The Xiaomi 17 Pro foregoes LDAC but adds aptX Adaptive, Qualcomm's more modern codec that dynamically adjusts bitrate between 276 kbps and 1.2 Mbps and also supports low-latency modes beneficial for gaming and video. These are genuinely different strengths: LDAC excels for pure listening quality with compatible gear, while aptX Adaptive offers broader versatility across latency-sensitive and high-fidelity use cases.

The audio group is essentially a tie with a preference split. Users invested in Sony or LDAC-compatible headphones will prefer the S25 Ultra, while those using newer aptX Adaptive devices or wanting adaptive latency performance will find the Xiaomi 17 Pro the better match. Neither has an objectively broader codec advantage over the other — it comes down entirely to which ecosystem a user is already in.

At the core connectivity level, these two phones are nearly identical: both support 5G, Wi-Fi 7, Bluetooth 5.4, NFC, USB Type-C 3.2, GPS with Galileo, and matching peak download and upload speeds. The shared Wi-Fi stack covers all relevant modern standards, so neither has a wireless networking advantage in practice.

The meaningful differences are in the extras. The S25 Ultra ships with a built-in stylus — a differentiator that no spec comparison can fully capture, as it opens up handwriting, annotation, and precision input workflows that are simply unavailable on the Xiaomi 17 Pro. The S25 Ultra also supports ANT+, a protocol used to connect fitness sensors and wearables, which matters to users with ANT+ sports equipment. On the flip side, the Xiaomi 17 Pro includes an infrared sensor, turning the phone into a universal remote for TVs, air conditioners, and other IR-controlled appliances — a convenience feature the S25 Ultra omits. The S25 Ultra also supports dual physical SIM plus dual eSIM, compared to the Xiaomi 17 Pro's dual physical SIM only, giving Samsung users more flexibility for managing multiple numbers or travel SIMs without carrying a physical card.

Overall, the S25 Ultra holds the edge in this group, primarily due to the included stylus — a hardware capability with no equivalent on the Xiaomi 17 Pro — and the added eSIM flexibility. The Xiaomi 17 Pro's infrared sensor is a useful everyday convenience, but it does not offset the broader utility gap.

This group presents a complete tie. Every spec listed — video light presence, absence of sapphire glass, flat display design, and no e-paper display — is identical across both the Samsung Galaxy S25 Ultra and the Xiaomi 17 Pro. There are no differentiators to analyze here, and no advantage to assign to either device based on the provided data.