OnePlus Ace Pro vs Xiaomi 12S Pro: A Deep Dive into Performance and Charging

Both the OnePlus Ace Pro and Xiaomi 12S Pro represent compelling options in the flagship Android space, particularly as the 12S Pro sees price reductions. Both devices are powered by the Qualcomm Snapdragon 8+ Gen 1, promising similar performance. However, key differences emerge in their charging solutions and additional features, making the choice less straightforward than a simple spec sheet comparison suggests.
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🏆 Quick Verdict

For the average user prioritizing the absolute fastest charging speeds and a streamlined experience, the OnePlus Ace Pro emerges as the winner. Its 150W wired charging significantly outperforms the Xiaomi 12S Pro’s 120W, and the lack of wireless charging on the Ace Pro isn't a dealbreaker for those who primarily rely on wired power.

PHONES
Phone Names OnePlus Ace Pro Xiaomi 12S Pro
Network
2G bandsGSM 850 / 900 / 1800 / 1900GSM 850 / 900 / 1800 / 1900
3G bandsHSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands1, 2, 3, 4, 5, 7, 8, 18, 19, 20, 26, 28, 34, 38, 39, 40, 411, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 26, 34, 38, 39, 40, 41, 42
5G bands1, 3, 5, 8, 20, 28, 38, 40, 41, 77, 78 SA/NSA1, 3, 5, 8, 28, 38, 40, 41, 77, 78, 79 SA/NSA
SpeedHSPA, LTE, 5GHSPA, LTE, 5G
TechnologyGSM / CDMA / HSPA / LTE / 5GGSM / CDMA / HSPA / EVDO / LTE / 5G
 CDMA 800 CDMA2000 1xEV-DO
Launch
Announced2022, August 092022, July 04
StatusAvailable. Released 2022, August 15Available. Released 2022, July 07
Body
BuildGlass front (Gorilla Glass 5), plastic frame, glass backGlass front (Gorilla Glass Victus), glass back or eco leather back, aluminum frame
Dimensions163 x 75.4 x 8.8 mm (6.42 x 2.97 x 0.35 in)163.6 x 74.6 x 8.2 mm or 8.7 mm
SIMNano-SIM + Nano-SIMNano-SIM + Nano-SIM
Weight203.5 g (7.20 oz)203 g / 204 g (7.16 oz)
Display
ProtectionCorning Gorilla Glass 5Corning Gorilla Glass Victus
Resolution1080 x 2412 pixels, 20:9 ratio (~394 ppi density)1440 x 3200 pixels, 20:9 ratio (~521 ppi density)
Size6.7 inches, 108.0 cm2 (~87.9% screen-to-body ratio)6.73 inches, 109.4 cm2 (~89.6% screen-to-body ratio)
TypeFluid AMOLED, 1B colors, 120Hz, HDR10+, 500 nits (typ), 800 nits (HBM), 950 nits (peak)LTPO AMOLED, 1B colors, 120Hz, Dolby Vision, HDR10+, 1000 nits (HBM), 1500 nits (peak)
Platform
CPUOcta-core (1x3.19 GHz Cortex-X2 & 3x2.75 GHz Cortex-A710 & 4x1.80 GHz Cortex-A510)Octa-core (1x3.19 GHz Cortex-X2 & 3x2.75 GHz Cortex-A710 & 4x1.80 GHz Cortex-A510)
ChipsetQualcomm SM8475 Snapdragon 8+ Gen 1 (4 nm)Qualcomm SM8475 Snapdragon 8+ Gen 1 (4 nm)
GPUAdreno 730Adreno 730
OSAndroid 12, ColorOS 12.1Android 12, MIUI 13
Memory
Card slotNoNo
Internal256GB 12GB RAM, 256GB 16GB RAM, 512GB 16GB RAM128GB 8GB RAM, 256GB 8GB RAM, 256GB 12GB RAM, 512GB 12GB RAM
 UFS 3.1UFS 3.1
Main Camera
FeaturesColor spectrum sensor, Dual-LED flash, HDR, panoramaLeica lens, color spectrum sensor, Dual-LED dual-tone flash, HDR, panorama
Single16 MP, f/2.4, 24mm (wide), 1/3", 1.0µm32 MP, f/2.5, 26mm (wide), 0.7µm
Triple50 MP, f/1.8, 24mm (wide), 1/1.56", 1.0µm, PDAF, OIS 8 MP, f/2.2, 120˚ (ultrawide), 1/4.0", 1.12µm 2 MP (macro)50 MP, f/1.9, 24mm (wide), 1/1.28", 1.22µm, dual pixel PDAF, OIS 50 MP, f/1.9, 50mm (telephoto), PDAF, 2x optical zoom 50 MP, f/2.2, 115˚ (ultrawide)
Video4K@30/60fps, 1080p@30/60/240fps, gyro-EIS8K@24fps (HDR), 4K@30/60fps (HDR10+), 1080p@30/120/240/960fps, 720p@1920fps, gyro-EIS
Selfie camera
FeaturesHDRHDR, panorama
Single16 MP, f/2.4, 24mm (wide), 1/3", 1.0µm32 MP, f/2.5, 26mm (wide), 0.7µm
Video1080p@30fps1080p@30/60fps, 720p@120fps, HDR10+
Sound
3.5mm jack NoNo
35mm jackNoNo
Loudspeaker Yes, with stereo speakersYes, with stereo speakers
 24-bit/192kHz audio24-bit/192kHz audio Tuned by Harman Kardon
Comms
Bluetooth5.2, A2DP, LE, aptX HD5.2, A2DP, LE, aptX HD, aptX Adaptive
Infrared port-Yes
NFCYesYes
PositioningGPS (L1+L5), GLONASS (L1), BDS (B1I+B1c+B2a), GALILEO (E1+E5a), QZSS (L1+L5)GPS (L1+L5), GLONASS (L1), BDS (B1I+B1c+B2a), GALILEO (E1+E5a), QZSS (L1+L5), NavIC (L5)
RadioNoNo
USBUSB Type-C 2.0USB Type-C 2.0, OTG
WLANWi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi DirectWi-Fi 802.11 a/b/g/n/ac/6e, dual-band, Wi-Fi Direct
Features
SensorsFingerprint (under display, optical), accelerometer, gyro, proximity, compassFingerprint (under display, optical), accelerometer, gyro, compass
 -Virtual proximity sensing
Battery
Charging150W wired120W wired, PD3.0, QC4, 100% in 19 min 50W wireless, 100% in 42 min 10W reverse wireless
TypeLi-Po 4800 mAhLi-Po 4600 mAh
Misc
ColorsMoonstone Black, Jade Green, Genshin ImpactGray, White, Purple, Green
ModelsPGP1102206122SC
PriceAbout 500 EURAbout 670 EUR

OnePlus Ace Pro

  • Industry-leading 150W wired charging
  • Identical Snapdragon 8+ Gen 1 performance
  • Potentially more aggressive pricing (depending on market)

  • No wireless charging
  • No reverse wireless charging
  • Limited information on camera capabilities

Xiaomi 12S Pro

  • Fast 120W wired charging
  • Convenient 50W wireless charging
  • Reverse wireless charging for accessories

  • Slower wired charging than Ace Pro
  • Potentially higher price point
  • Image processing may not appeal to all users

Display Comparison

While detailed display specs aren't provided, both phones likely feature high-refresh-rate AMOLED panels, common for this price segment. The absence of LTPO information suggests neither device dynamically adjusts refresh rates for optimal power efficiency. Bezels are expected to be minimal on both, reflecting current flagship design trends. Color accuracy will likely be excellent, though specific calibration details are unavailable. The real-world difference in display quality will likely be minimal for most users.

Camera Comparison

Without detailed camera specifications, a direct comparison is limited. Both phones likely feature multi-camera systems, but the sensor sizes and lens apertures are unknown. The Xiaomi 12S Pro’s history suggests a focus on image processing tuned for natural colors, while OnePlus often leans towards more vibrant, saturated images. The absence of information on Optical Image Stabilization (OIS) makes it difficult to assess low-light performance. Any 2MP macro or depth sensors are likely to offer minimal benefit over software-based solutions.

Performance

Both the OnePlus Ace Pro and Xiaomi 12S Pro utilize the Qualcomm SM8475 Snapdragon 8+ Gen 1 (4nm). This means identical CPU configurations: an octa-core setup with 1x3.19 GHz Cortex-X2, 3x2.75 GHz Cortex-A710, and 4x1.80 GHz Cortex-A510 cores. Performance in CPU-bound tasks will be virtually indistinguishable. The 4nm process node contributes to improved thermal efficiency compared to previous generations, mitigating throttling during sustained workloads. However, thermal management implementation by each manufacturer will play a crucial role in real-world gaming performance. RAM speed (likely LPDDR5X) is also expected to be similar, further minimizing performance gaps.

Battery Life

The OnePlus Ace Pro’s 150W wired charging is its standout feature, promising incredibly fast top-ups. The Xiaomi 12S Pro counters with 120W wired charging, which is still exceptionally fast, but demonstrably slower. The 12S Pro further differentiates itself with 50W wireless charging and 10W reverse wireless charging – features absent on the Ace Pro. The Xiaomi 12S Pro claims a full charge in 19 minutes, while the Ace Pro’s charging time is not specified, but is expected to be even faster. The actual battery capacity (mAh) isn't provided, but the charging speed advantage of the Ace Pro will be noticeable for users who prioritize quick power boosts.

Buying Guide

Buy the OnePlus Ace Pro if you need the absolute fastest wired charging available and prioritize a simple, focused experience. This phone is ideal for users who frequently top up their battery throughout the day and don't rely heavily on wireless charging. Buy the Xiaomi 12S Pro if you value the convenience of both fast 120W wired charging *and* 50W wireless charging, alongside reverse wireless charging capabilities, making it a more versatile power solution for a wider range of devices.

Frequently Asked Questions

❓ Does the OnePlus Ace Pro's lack of wireless charging significantly impact usability?
For users accustomed to the convenience of wireless charging, the absence on the Ace Pro is a drawback. However, the 150W wired charging is so fast that it can quickly compensate for this, making it a less critical issue for many. If you primarily charge overnight or at a desk, the lack of wireless charging is unlikely to be a major inconvenience.
❓ How does the thermal performance of the Snapdragon 8+ Gen 1 differ between the OnePlus Ace Pro and Xiaomi 12S Pro?
While both phones use the same chipset, the effectiveness of their cooling systems will determine real-world thermal performance. OnePlus often employs aggressive cooling solutions, potentially leading to slightly better sustained performance during extended gaming sessions. However, Xiaomi’s thermal management is also typically well-regarded, and the difference is likely to be marginal.
❓ Is the 120W charging on the Xiaomi 12S Pro still considered fast compared to other flagship phones?
Absolutely. 120W charging is still exceptionally fast and significantly quicker than the charging speeds offered by many other flagship devices. While the OnePlus Ace Pro surpasses it, the 12S Pro’s charging speed is more than adequate for most users and provides a full charge in a very reasonable timeframe.