Xiaomi 15 Ultra vs Samsung Galaxy S25 Ultra: Which ‘Ultra’ Do You Need?

Apple and Samsung mainly dominate the premium smartphone category, but we have lately seen contenders like Vivo joining the league with the X200 Pro and even Xiaomi with the most recent offering in town: the Xiaomi 15 Ultra. The phone brings all the premium features one can think of, making it rival the Galaxy S25 Ultra, which is arguably the best Android flagship. So, how do these phones compare? Let’s find out.

Xiaomi 15 Ultra vs Samsung Galaxy S25 Ultra: Specifications at a Glance

		4.6 ★
	Xiaomi 15 Ultra	Samsung Galaxy S25 Ultra
	₹ 109,999	₹ 123,999
Expert Score	--	8.7/10 by Expert
Processor	Snapdragon 8 Elite	Snapdragon 8 Elite
Display	6.73″ (17.09 cm) 120Hz Display	6.9″ (17.53 cm) 120Hz Display
Rear Camera	50+50+50+200 MP Rear	200+50+10+50 MP Rear
Front Camera	32 MP Front	12 MP Front
RAM & Storage	16 GB RAM 512 GB Storage	12 GB RAM 256 GB Storage
Battery	5410 mAh 90W Charging	5000 mAh 45W Charging
OS	Android v15	Android v15

Xiaomi 15 Ultra vs Samsung Galaxy S25 Ultra: Price and Availability

The Xiaomi 15 Ultra is cheaper, and with the added discounts, it becomes a better value-for-money option. That said, Samsung offers more RAM+Storage configurations, giving people more choices. Also, it is already available in the market, while the Xiaomi 15 Ultra will go on sale starting April 3. Pre-booking for this phone will begin on March 19.

Xiaomi 15 Ultra vs Samsung Galaxy S25 Ultra: Design

• The Xiaomi 15 Ultra looks similar to the Xiaomi 14 Ultra, which is all about mimicking the classic professional camera’s feel. It has a massive round camera hump. The back panel has a combination of aerospace-grade glass fiber and PU leather for a classy look. It comes in a single Silver Chrome colour and weighs 229 grams.
• The Galaxy S25 Ultra is reminiscent of its predecessor and has the vertically-arranged rear camera setup. There are a few changes, though: the corners are flat, and the phone is now lighter. It comes in Titanium Silverblue, Titanium Gray, Titanium Whitesilver, and Titanium Black, along with special colours like Titanium Jetblack, Titanium Jadegreen, and Titanium Pinkgold. It weighs 218 grams.

Both devices boast unique designs—the Xiaomi 15 Ultra features a circular camera module, while the Galaxy S25 Ultra opts for a sleek, linear camera arrangement. Ultimately, the choice comes down to personal preference. However, the Samsung Galaxy S25 Ultra holds an advantage, as it is lighter and available in a wider range of colours.

Xiaomi 15 Ultra vs Samsung Galaxy S25 Ultra: Display

• The Xiaomi 15 Ultra has a 6.73-inch WQHD+ Quad-Curve AMOLED display with a 120Hz adaptive refresh rate, 3200 nits of peak brightness, Dolby Vision, and HDR10+. It also has triple TÜV certifications for eye protection. It is protected by Xiaomi Shield Glass 2.0.
• The Galaxy S25 Ultra features a 6.9-inch Dynamic LTPO AMOLED 2X screen with a 120Hz refresh rate, 2600 nits of peak brightness, and a resolution of 1440×3120 pixels. It is protected by the Corning Gorilla Armor 2.

Both phones are evenly matched here with a capable display, which is expected to offer a great viewing experience. However, if you are into numbers, the Xiaomi 15 Ultra takes the crown for its high peak brightness.

Xiaomi 15 Ultra vs Samsung Galaxy S25 Ultra: Performance

• The Xiaomi 15 Ultra is powered by the 3nm Snapdragon 8 Elite chipset with a clock speed of up to 4.32GHz, an Adreno GPU, and a Qualcomm AI Engine. The phone supports 16GB of LPDDR5X RAM and 512GB of UFS 4.1 storage.
• The S25 Ultra has the Snapdragon 8 Elite for Galaxy SoC with a slightly increased clock speed of 4.47GHz. It supports 12GB of RAM and up to 1TB of storage.

The Xiaomi 15 Ultra and the Galaxy S25 Ultra have the same chipset, so a similar performance is expected. We have to put the devices to the test for a proper comparison to declare a winner, so stay tuned. However, the S25 Ultra has an advantage due to three storage options that can meet people’s need for more space.

Xiaomi 15 Ultra vs Samsung Galaxy S25 Ultra: Software

• The Xiaomi 15 Ultra runs HyperOS 2.0 based on Android 15 and has the HyperAI suite of features, such as AI Writing, AI Speech Interpreter, Circle to Search, Gemini support, and much more.
• The Samsung Galaxy S25 Ultra runs One UI 7.0 based on Android 15. It offers seven years of updates and focuses on AI with multimodality AI model support and features like Now Brief, Gemini Live, enhanced Circle to Search, and more.

Both the Galaxy S25 Ultra and Xiaomi 15 Ultra come with the latest software and a host of AI-driven features, making it difficult to declare a clear winner. However, the S25 Ultra holds an advantage with its longer software update cycle and a cleaner, less cluttered user experience.

Xiaomi 15 Ultra vs Samsung Galaxy S25 Ultra: Cameras

• The Xiaomi 15 Ultra has Leica-branded cameras and features a quad-camera setup: a 50MP 23mm main LYT-900 camera with a 1-inch sensor size and OIS, a 200MP periscope lens with OIS and 100mm equivalent focal length, a 50MP floating telephoto with OIS, and a 50MP ultra-wide lens. The front snapper stands at 32MP. The phone supports Leica filters, 8K video recording, up to 400mm focal length for portraits, 4K 120fps Cinematic Slow Motion, and more.
• The Samsung Galaxy S25 Ultra also brings quad rear cameras: a 200MP primary camera with 2x optical zoom, a 50MP telephoto lens with 5x optical zoom, a 10MP telephoto lens with 3x optical zoom, and a 50MP ultra-wide lens. It has a 12MP front camera. The phone supports 10-bit HDR videos, up to 8K 30fps for the rear cameras, support for LOG format, and more.

Both phones boast impressive camera capabilities and are expected to showcase extraordinary results. The competition is tough, and we have to test their cameras properly to see which one comes out as a winner. That said, if we look at the specs on paper, the Xiaomi 15 Ultra’s camera system looks more versatile.

It also comes with the Photography Kit Legend Edition, which includes a detachable shutter button and thumb support, along with an exclusive Fastshot mode interface.

Xiaomi 15 Ultra vs Samsung Galaxy S25 Ultra: Battery and Charging

• The Xiaomi 15 Ultra gets its fuel from the 5,410mAh battery with support for 90W HyperCharge wired charging and 50W wireless charging.
• The Galaxy S25 Ultra has a 5,000mAh battery with 45W fast charging and 15W wireless charging.

The Xiaomi 15 Ultra wins in this area for its bigger battery and faster charging speeds.

Xiaomi 15 Ultra vs Samsung Galaxy S25 Ultra: Verdict

The Galaxy S25 Ultra and Xiaomi 15 Ultra are strong contenders for the title of the best Android flagship of 2025. Both offer top-tier camera systems, the latest chipsets, and premium designs.

However, the Xiaomi 15 Ultra stands out with its versatile Leica camera setup, faster charging, and a more competitive price, making it an excellent choice for photography enthusiasts who want flagship performance without crossing the ₹1 lakh mark. On the other hand, the Galaxy S25 Ultra caters to those who prioritize a longer software update cycle, higher storage options, and Samsung’s well-established ecosystem and brand trust.