Verdict: Xiaomi 15S Pro
The Xiaomi 15S Pro offers a similarly strong overall package as the Pro model. This is hardly surprising, as everything apart from the chipset remains the same. In its effort to become more independent and to offer all components in-house, Xiaomi is on a very promising path with its XRing O1. Considering Google's work with its Tensor series, Xiaomi's SoC debut is genuinely remarkable. While the 15S Pro with the XRing O1 is slightly less powerful than the 15 Pro with the Snapdragon 8 Elite, it offers more consistent performance overall.
Anyone willing to accept compromises in update support and availability will get a great smartphone with solid hardware. However, we see no clear reason to choose the 15S Pro over the Xiaomi 15 Pro.
Pros
Cons
Price and availability
The Xiaomi 15S Pro is currently available exclusively on the Chinese market. The standard configuration, which includes 16 GB of LPDDR5T RAM and 512 GB of UFS 4.1 storage, is priced at ¥5,499 (approximately €680 or $765 USD).
At our loan partner Trading Shenzhen, prices start at around €700, or roughly $820 USD. It remains unclear whether this new flagship phone will be officially released in Europe or the United States.
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Table of Contents
- Verdict: Xiaomi 15S Pro
- Xiaomi 15S Pro specifications
- Chassis: Xiaomi smartphone is waterproof
- Features: Xiaomi 15S Pro includes USB 3.2 support
- Software: Xiaomi phone with Android 15
- Connectivity and GNSS: Xiaomi adopts Wi-Fi 7
- Call functions and voice quality: Android phone with dual SIM
- Cameras: Xiaomi 15S Pro features Leica branding
- Accessories and warranty: Xiaomi smartphone includes power adapter
- Input devices and operation: Xiaomi smartphone features a 3D ultrasonic sensor
- Display: Xiaomi 15S Pro uses OLED screen
- Performance: Xiaomi powers up with its own custom XRing O1 SoC
- Emissions: Xiaomi 15S Pro shows noticeable heat build-up
- Battery life: Xiaomi phone charges very quickly
- Notebookcheck overall rating
- Alternatives for comparison
The Xiaomi 15S Pro is a new variant of the existing Pro model, but aside from the new processor and an optional carbon look, it remains largely unchanged. According to Xiaomi, the textured surface is intended to resemble dragon scales, or at least that is what the name implies. While the 15 Pro is powered by the Qualcomm Snapdragon 8 Elite, the S version in the 15 series uses Xiaomi's own XRing O1 chip.
Xiaomi 15S Pro specifications
Chassis: Xiaomi smartphone is waterproof
The design and dimensions of the Xiaomi 15S Pro are identical to those of the standard Pro model. It features a water-resistant chassis rated to the IP68 standard. High-quality materials and excellent build precision give this premium smartphone a refined and sophisticated feel. With a screen-to-body ratio of 90 percent, the 15S Pro also makes efficient use of its front surface area.
The matte finish on the back helps minimise visible fingerprints. Xiaomi uses Dragon Crystal Glass, and the aluminium frame transitions seamlessly into the glass body. In the hand, the 15S Pro feels exceptionally cohesive and well balanced.
Features: Xiaomi 15S Pro includes USB 3.2 support
The Xiaomi smartphone offers a well-rounded feature set including USB OTG, Bluetooth 5.4, NFC, an infrared blaster, and a UWB chip. It also includes a high-speed USB port with 3.2 Gen 2 specification, which supports wired video output. According to the manufacturer, sensitive data such as biometric information and passwords are protected by a dedicated in-house security chip built into the device.
Software: Xiaomi phone with Android 15
The Xiaomi 15S Pro ships with the second-generation HyperOS and comes with Play Protect certification. Xiaomi remains vague about software update policies for the Chinese market. At the time of testing, the device was running security patches from May 2025.
As is typical for the manufacturer's Chinese models, Google services are not supported out of the box. Instead, Xiaomi's own ecosystem and local Chinese services are used.
However, Google frameworks are preinstalled, meaning users only need to install the Play Store manually via Xiaomi's app store. The system language can be set to Chinese or English. A German language pack is not available, which may be a drawback for German-speaking users considering an import.
Sustainability
The packaging of the Xiaomi 15S Pro is made of cardboard, and the device itself is wrapped in paper. Xiaomi does not provide detailed information about the materials used or their recycling rates, but the company states that it is increasing the use of recycled materials across all its smartphones.
Connectivity and GNSS: Xiaomi adopts Wi-Fi 7
Although the 15S Pro is unlikely to see a global release, it offers broad support for both 5G and 4G mobile network bands. All frequency bands relevant for German-speaking regions are supported, making the device viable for import.
Equipped with Wi-Fi 7, the Xiaomi smartphone achieves peak transfer speeds of up to 1,800 Mbps when tested with the Asus ROG Rapture GT-AXE11000 router. This is made possible by the device's ability to operate in the 6 GHz band. However, upload speeds during testing were noticeably lower.
| Networking | |
| Xiaomi 15S Pro | |
| iperf3 transmit AXE11000 6GHz | |
| iperf3 receive AXE11000 6GHz | |
| Xiaomi 15 Pro | |
| iperf3 transmit AXE11000 6GHz | |
| iperf3 receive AXE11000 6GHz | |
| Samsung Galaxy S25+ | |
| iperf3 transmit AXE11000 | |
| iperf3 receive AXE11000 | |
| iperf3 transmit AXE11000 6GHz | |
| iperf3 receive AXE11000 6GHz | |
| Oppo Find X8 Pro | |
| iperf3 transmit AXE11000 6GHz | |
| iperf3 receive AXE11000 6GHz | |
| Google Pixel 9 Pro | |
| iperf3 transmit AXE11000 | |
| iperf3 receive AXE11000 | |
| iperf3 transmit AXE11000 6GHz | |
| iperf3 receive AXE11000 6GHz | |
| Average 802.11 a/b/g/n/ac/ax/be | |
| iperf3 transmit AXE11000 | |
| iperf3 receive AXE11000 | |
| iperf3 transmit AXE11000 6GHz | |
| iperf3 receive AXE11000 6GHz | |
| Average of class Smartphone | |
| iperf3 transmit AXE11000 | |
| iperf3 receive AXE11000 | |
| iperf3 transmit AXE11000 6GHz | |
| iperf3 receive AXE11000 6GHz | |
To assess real-world positioning accuracy, we recorded a short cycling route for comparison using the Garmin Venu 2. The route data from the Xiaomi smartphone shows some minor deviations in detail but overall provides accurate location tracking.
Thanks to dual band support for satellite systems, positioning is both highly precise with accuracy around two metres and very quick.
Call functions and voice quality: Android phone with dual SIM
The Xiaomi 15S Pro is equipped with four microphones and supports two physical nano SIM cards. eSIM functionality is not available in the Chinese version. However, the device does support VoLTE and calls over domestic Wi-Fi networks.
Voice quality is good, with voices reproduced clearly and at an adequate volume.
Cameras: Xiaomi 15S Pro features Leica branding
The rear-facing triple camera setup with Leica branding remains unchanged from the Pro model . The 50 MP main camera uses a 1/1.31-inch sensor and features optical image stabilisation. It delivers strong detail and very fast capture performance. However, colour accuracy shows occasional deviations, which may disappoint at this price point.
The Leica periscope lens offers a 50 MP resolution with OIS, enabling 5x lossless zoom and maintaining good sharpness even at up to 10x magnification. The 14 mm ultra-wide-angle camera is somewhat less convincing, though overall image quality remains acceptable for the price bracket.
For video recording, both Dolby Vision and HDR10+ are supported. Footage can be captured in 8K at 30 frames per second, or in UHD at up to 60 frames per second.
Image comparison
Choose a scene and navigate within the first image. One click changes the position on touchscreens. One click on the zoomed-in image opens the original in a new window. The first image shows the scaled photograph of the test device.
HauptkameraHauptkameraLow LightUltraweitwinkel
Accessories and warranty: Xiaomi smartphone includes power adapter
The box includes a 90-watt fast charger, a protective case and a USB cable. A screen protector is also pre-applied. Our review sample from Trading Shenzhen additionally came with an EU power adapter and a USB OTG adapter, extending the standard contents for the Chinese version.
The imported device comes with a 12-month warranty. This applies specifically to our review unit sourced from Trading Shenzhen and may differ depending on the country of purchase. In the event of a warranty claim, returns can be sent to a German shipping address provided by the retailer.
Input devices and operation: Xiaomi smartphone features a 3D ultrasonic sensor
Inputs on the OLED display are registered quickly and precisely, even at the edges of the touchscreen. The manufacturer specifies a touch sampling rate of up to 300 Hz. The 15S Pro offers smooth handling throughout, and the X-axis vibration motor provides crisp haptic feedback.
For authentication, the Xiaomi smartphone uses a 3D ultrasonic fingerprint sensor integrated into the display, which reliably recognises registered fingerprints. Biometric face recognition is also available, though only via a relatively insecure 2D face unlock function.
Display: Xiaomi 15S Pro uses OLED screen
The 6.73-inch display on the 15S Pro supports a 120 Hz refresh rate and offers a sharp 1440p resolution. Thanks to LTPO technology, the Xiaomi phone can reduce the refresh rate down to 1 Hz to conserve power.
In our tests, the panel reached a peak brightness of 3,142 cd/m² using the realistic APL18 pattern, coming very close to the advertised maximum of 3,200 nits.
As with typical OLED displays, Xiaomi uses PWM to control brightness. The device operates at a high PWM frequency of 1,920 Hz, as per the manufacturer. However, we observed baseline flickering at approximately 90 Hz. Oscilloscope measurements indicated consistent amplitude across the entire brightness range.
| |||||||||||||||||||||||||
Brightness Distribution: 91 %
Center on Battery: 993 cd/m²
Contrast: ∞:1 (Black: 0 cd/m²)
ΔE Color 2.07 | 0.5-29.43 Ø4.83
ΔE Greyscale 3.3 | 0.09-98 Ø5.1
99.3% sRGB (Calman 2D)
Gamma: 2.233
| Xiaomi 15S Pro 3200x1440, 6.7" | Xiaomi 15 Pro AMOLED, 3200x1440, 6.7" | Samsung Galaxy S25+ Dynamic AMOLED 2X, 3120x1440, 6.7" | Oppo Find X8 Pro AMOLED, 2780x1264, 6.8" | Google Pixel 9 Pro OLED, 2856x1280, 6.3" | |
|---|---|---|---|---|---|
| Screen | 23% | 20% | 39% | 69% | |
| Brightness middle | 983 | 1016 3% | 1371 39% | 1167 19% | 2083 112% |
| Brightness | 949 | 1017 7% | 1370 44% | 1160 22% | 2016 112% |
| Brightness Distribution | 91 | 98 8% | 96 5% | 98 8% | 84 -8% |
| Black Level * | |||||
| Colorchecker dE 2000 * | 2.07 | 1.15 44% | 2.7 -30% | 0.87 58% | 0.7 66% |
| Colorchecker dE 2000 max. * | 5.24 | 3.57 32% | 4.2 20% | 1.64 69% | 2 62% |
| Greyscale dE 2000 * | 3.3 | 1.9 42% | 2 39% | 1.4 58% | 1.1 67% |
| Gamma | 2.233 99% | 2.2 100% | 2.03 108% | 2.311 95% | 2.22 99% |
| CCT | 7224 90% | 6677 97% | 6450 101% | 6426 101% | 6560 99% |
* ... smaller is better
Screen Flickering / PWM (Pulse-Width Modulation)
| Screen flickering / PWM detected | 91.4 Hz Amplitude: 38 % |  | |
The display backlight flickers at 91.4 Hz (worst case, e.g., utilizing PWM) . The frequency of 91.4 Hz is very low, so the flickering may cause eyestrain and headaches after extended use. In comparison: 53 % of all tested devices do not use PWM to dim the display. If PWM was detected, an average of 8350 (minimum: 5 - maximum: 343500) Hz was measured. | |||
Measurement series with fixed zoom level and different brightness settings (The amplitude curve at minimum brightness looks flat, but this is due to the scaling. The info box shows the enlarged version of the amplitude at minimum brightness.)
The range of display settings is impressively extensive. In addition to various colour profiles, users can also adjust the colour temperature and fine-tune individual parameters. In the "Original Pro" profile, colour deviations are barely noticeable.
Display Response Times
| ↔ Response Time Black to White | ||
|---|---|---|
| 18.6 ms ... rise ↗ and fall ↘ combined | ↗ 1.2 ms rise |  |
| ↘ 17.4 ms fall | ||
| The screen shows good response rates in our tests, but may be too slow for competitive gamers. In comparison, all tested devices range from 0.1 (minimum) to 240 (maximum) ms. » 39 % of all devices are better. This means that the measured response time is similar to the average of all tested devices (20.5 ms). | ||
| ↔ Response Time 50% Grey to 80% Grey | ||
| 6.3 ms ... rise ↗ and fall ↘ combined | ↗ 5 ms rise |  |
| ↘ 1.3 ms fall | ||
| The screen shows very fast response rates in our tests and should be very well suited for fast-paced gaming. In comparison, all tested devices range from 0.165 (minimum) to 636 (maximum) ms. » 17 % of all devices are better. This means that the measured response time is better than the average of all tested devices (32.1 ms). | ||
Outdoors, the 15S Pro leaves a strong impression. Even under direct sunlight, display content remains clearly visible. Viewing angle stability is also excellent, with no cause for criticism.
Performance: Xiaomi powers up with its own custom XRing O1 SoC
The XRing O1 chip is manufactured using a 3 nm process and reaches clock speeds of up to 3.9 GHz. In Geekbench, the Xiaomi CPU performs at a similar level to the Snapdragon 8 Elite found in the Pro model, although the Xiaomi 15 Pro still holds a slight advantage.
Graphics processing is handled by an integrated Immortalis G925 with 16 cores, which shows strong results in GPU benchmarks and does not need to shy away from the competition. While the 15S Pro does not outperform a Galaxy S25 Ultra in demanding GFXBench tests, it still achieves 50 FPS at 4K resolution.
| UL Procyon AI Inference for Android - Overall Score NNAPI | |
| Oppo Find X8 Pro | |
| Google Pixel 9 Pro | |
| Samsung Galaxy S25+ | |
| Average Xiaomi Xring O1 (21087 - 23087, n=2) | |
| Xiaomi 15 Pro | |
| Xiaomi 15S Pro | |
| Average of class Smartphone (1267 - 81594, n=144, last 2 years) | |
GFXBench (DX / GLBenchmark) 2.7: T-Rex Onscreen | 1920x1080 T-Rex Offscreen
GFXBench 3.0: on screen Manhattan Onscreen OGL | 1920x1080 1080p Manhattan Offscreen
GFXBench 3.1: on screen Manhattan ES 3.1 Onscreen | 1920x1080 Manhattan ES 3.1 Offscreen
GFXBench: on screen Car Chase Onscreen | 1920x1080 Car Chase Offscreen | on screen Aztec Ruins High Tier Onscreen | 2560x1440 Aztec Ruins High Tier Offscreen | on screen Aztec Ruins Normal Tier Onscreen | 1920x1080 Aztec Ruins Normal Tier Offscreen | 3840x2160 4K Aztec Ruins High Tier Offscreen
| 3DMark / Wild Life Extreme Unlimited | |
| Samsung Galaxy S25+ | |
| Xiaomi 15 Pro | |
| Xiaomi 15S Pro | |
| Oppo Find X8 Pro | |
| Google Pixel 9 Pro | |
| 3DMark / Wild Life Extreme | |
| Samsung Galaxy S25+ | |
| Xiaomi 15 Pro | |
| Xiaomi 15S Pro | |
| Oppo Find X8 Pro | |
| Google Pixel 9 Pro | |
| 3DMark / Wild Life Unlimited Score | |
| Samsung Galaxy S25+ | |
| Xiaomi 15 Pro | |
| Xiaomi 15S Pro | |
| Google Pixel 9 Pro | |
| 3DMark / Solar Bay Score | |
| Samsung Galaxy S25+ | |
| Xiaomi 15 Pro | |
| Xiaomi 15S Pro | |
| Oppo Find X8 Pro | |
| Google Pixel 9 Pro | |
| 3DMark / Solar Bay Unlimited Score | |
| Samsung Galaxy S25+ | |
| Xiaomi 15 Pro | |
| Xiaomi 15S Pro | |
| Oppo Find X8 Pro | |
| Google Pixel 9 Pro | |
| 3DMark / Steel Nomad Light Unlimited Score | |
| Xiaomi 15 Pro | |
| Samsung Galaxy S25+ | |
| Xiaomi 15S Pro | |
| Oppo Find X8 Pro | |
| Google Pixel 9 Pro | |
| 3DMark / Steel Nomad Light Score | |
| Samsung Galaxy S25+ | |
| Xiaomi 15 Pro | |
| Xiaomi 15S Pro | |
| Oppo Find X8 Pro | |
| Google Pixel 9 Pro | |
| GFXBench (DX / GLBenchmark) 2.7 / T-Rex Onscreen | |
| Google Pixel 9 Pro | |
| Xiaomi 15 Pro | |
| Samsung Galaxy S25+ | |
| Xiaomi 15S Pro | |
| Oppo Find X8 Pro | |
| GFXBench (DX / GLBenchmark) 2.7 / T-Rex Offscreen | |
| Xiaomi 15S Pro | |
| Xiaomi 15 Pro | |
| Oppo Find X8 Pro | |
| Samsung Galaxy S25+ | |
| Google Pixel 9 Pro | |
| GFXBench 3.0 / Manhattan Onscreen OGL | |
| Xiaomi 15 Pro | |
| Samsung Galaxy S25+ | |
| Xiaomi 15S Pro | |
| Google Pixel 9 Pro | |
| Oppo Find X8 Pro | |
| GFXBench 3.0 / 1080p Manhattan Offscreen | |
| Oppo Find X8 Pro | |
| Samsung Galaxy S25+ | |
| Xiaomi 15 Pro | |
| Xiaomi 15S Pro | |
| Google Pixel 9 Pro | |
| GFXBench 3.1 / Manhattan ES 3.1 Onscreen | |
| Xiaomi 15 Pro | |
| Samsung Galaxy S25+ | |
| Xiaomi 15S Pro | |
| Google Pixel 9 Pro | |
| Oppo Find X8 Pro | |
| GFXBench 3.1 / Manhattan ES 3.1 Offscreen | |
| Oppo Find X8 Pro | |
| Xiaomi 15 Pro | |
| Xiaomi 15S Pro | |
| Samsung Galaxy S25+ | |
| Google Pixel 9 Pro | |
| GFXBench / Car Chase Onscreen | |
| Xiaomi 15 Pro | |
| Samsung Galaxy S25+ | |
| Xiaomi 15S Pro | |
| Oppo Find X8 Pro | |
| Google Pixel 9 Pro | |
| GFXBench / Car Chase Offscreen | |
| Xiaomi 15 Pro | |
| Xiaomi 15S Pro | |
| Samsung Galaxy S25+ | |
| Oppo Find X8 Pro | |
| Google Pixel 9 Pro | |
| GFXBench / Aztec Ruins High Tier Onscreen | |
| Samsung Galaxy S25+ | |
| Xiaomi 15 Pro | |
| Xiaomi 15S Pro | |
| Oppo Find X8 Pro | |
| Google Pixel 9 Pro | |
| GFXBench / Aztec Ruins High Tier Offscreen | |
| Xiaomi 15 Pro | |
| Samsung Galaxy S25+ | |
| Xiaomi 15S Pro | |
| Oppo Find X8 Pro | |
| Google Pixel 9 Pro | |
| GFXBench / Aztec Ruins Normal Tier Onscreen | |
| Xiaomi 15 Pro | |
| Samsung Galaxy S25+ | |
| Xiaomi 15S Pro | |
| Google Pixel 9 Pro | |
| Oppo Find X8 Pro | |
| GFXBench / Aztec Ruins Normal Tier Offscreen | |
| Samsung Galaxy S25+ | |
| Xiaomi 15 Pro | |
| Xiaomi 15S Pro | |
| Oppo Find X8 Pro | |
| Google Pixel 9 Pro | |
| GFXBench / 4K Aztec Ruins High Tier Offscreen | |
| Samsung Galaxy S25+ | |
| Xiaomi 15S Pro | |
| Xiaomi 15 Pro | |
| Oppo Find X8 Pro | |
| Google Pixel 9 Pro | |
| Jetstream 2 - 2.2 Total Score | |
| Xiaomi 15S Pro (Chrome 137) | |
| Average Xiaomi Xring O1 (256 - 265, n=2) | |
| Average of class Smartphone (56.4 - 401, n=23, last 2 years) | |
| Speedometer 3.0 - Score | |
| Samsung Galaxy S25+ (Chrome 133.0.6943.137) | |
| Xiaomi 15 Pro (Chrome 132) | |
| Oppo Find X8 Pro (Chrome 131) | |
| Google Pixel 9 Pro (Chrome 131.0.6778.81) | |
| Average Xiaomi Xring O1 (14.5 - 16.9, n=2) | |
| Xiaomi 15S Pro | |
| Average of class Smartphone (1.03 - 34, n=104, last 2 years) | |
| WebXPRT 4 - Overall | |
| Xiaomi 15 Pro (Chrome 132) | |
| Samsung Galaxy S25+ (Chrome 133.0.6943.137) | |
| Average Xiaomi Xring O1 (196 - 198, n=2) | |
| Xiaomi 15S Pro (Chrome 137) | |
| Oppo Find X8 Pro (Chrome 131) | |
| Average of class Smartphone (22 - 273, n=151, last 2 years) | |
| Google Pixel 9 Pro (Chrome 131.0.6778.81) | |
| Octane V2 - Total Score | |
| Samsung Galaxy S25+ (Chrome 133.0.6943.137) | |
| Xiaomi 15 Pro (Chrome 132) | |
| Average Xiaomi Xring O1 (81076 - 81322, n=2) | |
| Xiaomi 15S Pro | |
| Oppo Find X8 Pro (Chrome 131) | |
| Google Pixel 9 Pro (Chrome 131.0.6778.81) | |
| Average of class Smartphone (2228 - 100368, n=204, last 2 years) | |
| Mozilla Kraken 1.1 - Total | |
| Average of class Smartphone (277 - 28190, n=160, last 2 years) | |
| Google Pixel 9 Pro (Chrome 131.0.6778.81) | |
| Oppo Find X8 Pro (Chrome 131) | |
| Average Xiaomi Xring O1 (502 - 551, n=2) | |
| Xiaomi 15S Pro (Chromne 137) | |
| Xiaomi 15 Pro (Chrome 132) | |
| Samsung Galaxy S25+ (Chrome 133.0.6943.137) | |
* ... smaller is better
| Xiaomi 15S Pro | Xiaomi 15 Pro | Samsung Galaxy S25+ | Oppo Find X8 Pro | Google Pixel 9 Pro | Average 512 GB UFS 4.1 Flash | Average of class Smartphone | |
|---|---|---|---|---|---|---|---|
| AndroBench 3-5 | -4% | -20% | -27% | -64% | -12% | -44% | |
| Sequential Read 256KB | 3786.34 | 3998.65 6% | 4057.35 7% | 3482.9 -8% | 1717.9 -55% | 3945 ? 4% | 2144 ? -43% |
| Sequential Write 256KB | 3649.81 | 3673.38 1% | 3311.02 -9% | 3498.5 -4% | 253.53 -93% | 3501 ? -4% | 1737 ? -52% |
| Random Read 4KB | 422.84 | 409.67 -3% | 294.51 -30% | 375.7 -11% | 218.41 -48% | 346 ? -18% | 293 ? -31% |
| Random Write 4KB | 677.95 | 555.55 -18% | 351.16 -48% | 100.4 -85% | 261.55 -61% | 490 ? -28% | 336 ? -50% |
Emissions: Xiaomi 15S Pro shows noticeable heat build-up
Temperature
Surface temperatures are relatively high. However, in the 3DMark Wild Life stress tests, the 15S Pro shows only a moderate performance drop of around 10 to 15 percent.
(-) The maximum temperature on the upper side is 48.2 °C / 119 F, compared to the average of 35.1 °C / 95 F, ranging from 21.9 to 63.7 °C for the class Smartphone.
(-) The bottom heats up to a maximum of 45.7 °C / 114 F, compared to the average of 34.1 °C / 93 F
(±) In idle usage, the average temperature for the upper side is 36.1 °C / 97 F, compared to the device average of 32.8 °C / 91 F.
3DMark Steel Nomad Stress Test
| 3DMark | |
| Wild Life Stress Test Stability | |
| Oppo Find X8 Pro | |
| Xiaomi 15S Pro | |
| Xiaomi 15 Pro | |
| Google Pixel 9 Pro | |
| Samsung Galaxy S25+ | |
| Wild Life Extreme Stress Test | |
| Xiaomi 15S Pro | |
| Xiaomi 15 Pro | |
| Google Pixel 9 Pro | |
| Oppo Find X8 Pro | |
| Samsung Galaxy S25+ | |
| Solar Bay Stress Test Stability | |
| Xiaomi 15S Pro | |
| Xiaomi 15 Pro | |
| Samsung Galaxy S25+ | |
| Oppo Find X8 Pro | |
| Steel Nomad Light Stress Test Stability | |
| Xiaomi 15S Pro | |
| Google Pixel 9 Pro | |
| Xiaomi 15 Pro | |
| Samsung Galaxy S25+ | |
| Oppo Find X8 Pro | |
Speakers
The Xiaomi smartphone uses a dual-speaker setup that delivers impressive sound. Light bass is present, although the pink noise test reveals a somewhat uneven frequency response. For external audio output, users can connect via the USB port (wired) or use Bluetooth 5.4 (wireless).
Xiaomi 15S Pro audio analysis
(+) | speakers can play relatively loud (87 dB)
Bass 100 - 315 Hz
(-) | nearly no bass - on average 16.4% lower than median
(±) | linearity of bass is average (8.7% delta to prev. frequency)
Mids 400 - 2000 Hz
(±) | higher mids - on average 6.8% higher than median
(+) | mids are linear (5.2% delta to prev. frequency)
Highs 2 - 16 kHz
(+) | balanced highs - only 3.6% away from median
(+) | highs are linear (6.9% delta to prev. frequency)
Overall 100 - 16.000 Hz
(+) | overall sound is linear (14.9% difference to median)
Compared to same class
» 1% of all tested devices in this class were better, 2% similar, 97% worse
» The best had a delta of 12%, average was 36%, worst was 134%
Compared to all devices tested
» 19% of all tested devices were better, 4% similar, 77% worse
» The best had a delta of 4%, average was 24%, worst was 134%
Google Pixel 9 Pro audio analysis
(+) | speakers can play relatively loud (90.6 dB)
Bass 100 - 315 Hz
(-) | nearly no bass - on average 21.5% lower than median
(±) | linearity of bass is average (7.3% delta to prev. frequency)
Mids 400 - 2000 Hz
(+) | balanced mids - only 3.1% away from median
(+) | mids are linear (5% delta to prev. frequency)
Highs 2 - 16 kHz
(±) | higher highs - on average 7.6% higher than median
(+) | highs are linear (5.1% delta to prev. frequency)
Overall 100 - 16.000 Hz
(±) | linearity of overall sound is average (16.8% difference to median)
Compared to same class
» 7% of all tested devices in this class were better, 6% similar, 86% worse
» The best had a delta of 12%, average was 36%, worst was 134%
Compared to all devices tested
» 28% of all tested devices were better, 7% similar, 65% worse
» The best had a delta of 4%, average was 24%, worst was 134%
Battery life: Xiaomi phone charges very quickly
Power consumption
The 15S Pro uses a new battery generation that combines silicon and carbon at the anode. The 6,100 mAh battery supports fast charging via USB-C at 90 watts or wireless charging at 50 watts. In our test, charging took just about 55 minutes when using Boost mode.
The device demonstrates efficient power consumption both at idle and under load.
| Off / Standby |   0.1 / 0.2 Watt |
| Idle |  0.8 / 1.4 / 1.7 Watt |
| Load |
6.3 / 9.1 Watt |
    
| |
Key:
min: ,
med: ,
max: Metrahit Energy | |
| Xiaomi 15S Pro 6100 mAh | Xiaomi 15 Pro 6100 mAh | Samsung Galaxy S25+ 4900 mAh | Oppo Find X8 Pro 5910 mAh | Google Pixel 9 Pro 4700 mAh | Average Xiaomi Xring O1 | Average of class Smartphone | |
|---|---|---|---|---|---|---|---|
| Power Consumption | 17% | -22% | 17% | -12% | -107% | -7% | |
| Idle Minimum * | 0.8 | 0.6 25% | 0.45 44% | 0.6 25% | 0.59 26% | 2.65 ? -231% | 0.869 ? -9% |
| Idle Average * | 1.4 | 0.9 36% | 1.09 22% | 0.8 43% | 1.1 21% | 3.1 ? -121% | 1.425 ? -2% |
| Idle Maximum * | 1.7 | 1.1 35% | 1.13 34% | 0.9 47% | 1.2 29% | 3.45 ? -103% | 1.587 ? 7% |
| Load Average * | 6.3 | 6.7 -6% | 14.41 -129% | 6.8 -8% | 7.15 -13% | 9.1 ? -44% | 7.15 ? -13% |
| Load Maximum * | 9.1 | 9.5 -4% | 16.37 -80% | 10.9 -20% | 20.37 -124% | 12.4 ? -36% | 10.8 ? -19% |
* ... smaller is better
Power consumption: Geekbench (150 cd/m²)
Power consumption: GFXbench (150 cd/m²)
Battery life
In our Wi-Fi test at a calibrated display brightness of 150 cd/m², the 15S Pro lasts for over 25 hours, which represents an excellent runtime.
| Xiaomi 15S Pro 6100 mAh | Xiaomi 15 Pro 6100 mAh | Samsung Galaxy S25+ 4900 mAh | Oppo Find X8 Pro 5910 mAh | Google Pixel 9 Pro 4700 mAh | |
|---|---|---|---|---|---|
| Battery Runtime | |||||
| WiFi v1.3 | 1526 | 1444 -5% | 1189 -22% | 1411 -8% | 1017 -33% |
Notebookcheck overall rating
The Xiaomi 15S Pro is an excellent smartphone, though it is unlikely to receive an official release in Europe.
Xiaomi 15S Pro
- 06/26/2025 v8
Marcus Herbrich
Total Sustainability Score: Alternatives for comparison
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|---|---|---|---|---|---|
1. 89.8%  | Xiaomi 15S Pro Xiaomi Xring O1 ⎘ ARM Immortalis-G925 MC16 ⎘ 16 GB Memory, 512 GB | Amazon: 1. $8.57 GANGANPRO 2 Pack HD Screen P... 2. $4.33 AKABEILA [1 Pack Privacy Scr... 3. $7.99 Lucyliy (3 Pack) Compatible ... List Price: 830€ | 216 g | 512 GB UFS 4.1 Flash | 6.73" 3200x1440 521 PPI |
2. 89.9%  | Xiaomi 15 Pro Qualcomm Snapdragon 8 Elite ⎘ Qualcomm Adreno 830 ⎘ 16 GB Memory, 1024 GB | Amazon: 1. $8.99 Anbzsign (2+2 Pack for Xiaom... 2. $4.99 Natbok 2 Pack 3D Compatible ... 3. $8.88 Foebxxs [2 Pack Hydrogel Fle... List Price: 810€ | 213 g | 1 TB UFS 4.0 Flash | 6.73" 3200x1440 521 PPI AMOLED |
3. 88.4%  | Samsung Galaxy S25+ Qualcomm Snapdragon 8 Elite for Galaxy ⎘ Qualcomm Adreno 830 ⎘ 12 GB Memory, 256 GB | Amazon: 1. $16.99 Super Fast Charger Type C, 2... 2. $16.99 S25 S24 S23 S22 Ultra Samsun... 3. $35.49 OtterBox Samsung Galaxy S25+... List Price: 1149 Euro | 190 g | 256 GB UFS 4.0 Flash | 6.70" 3120x1440 513 PPI Dynamic AMOLED 2X |
4. 87.3%  | Oppo Find X8 Pro Mediatek Dimensity 9400 ⎘ ARM Immortalis-G925 MC12 ⎘ 16 GB Memory, 512 GB | Amazon: 1. $15.99 AKABEILA [3 Pack Privacy Scr... 2. $12.02 [1-Pack] for Oppo Find X8 Pr... 3. $9.99 WRTBS Phone Case for Oppo Fi... List Price: 1199€ | 215 g | 512 GB UFS 4.0 Flash | 6.78" 2780x1264 450 PPI AMOLED |
5. 85.7%  | Google Pixel 9 Pro Google Tensor G4 ⎘ ARM Mali-G715 MP7 ⎘ 16 GB Memory, 128 GB | Amazon: 1. $799.00 Google Pixel 9 Pro - Unlocke... 2. $1,449.00 Google Pixel 9 Pro Fold - Un... 3. $599.00 Google Pixel 9 - Unlocked An... | 199 g | 128 GB UFS 3.1 Flash | 6.30" 2856x1280 495 PPI OLED |
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The selection of devices to be reviewed is made by our editorial team. The test sample was provided to the author as a loan by the manufacturer or retailer for the purpose of this review. The lender had no influence on this review, nor did the manufacturer receive a copy of this review before publication. There was no obligation to publish this review. We never accept compensation or payment in return for our reviews. As an independent media company, Notebookcheck is not subjected to the authority of manufacturers, retailers or publishers.
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