OnePlus Ace 2 vs. Xiaomi 13T: A Deep Dive into Performance and Battery Life

The OnePlus Ace 2 and Xiaomi 13T represent compelling options in the mid-to-high range, but cater to slightly different priorities. The Ace 2 leverages the proven Snapdragon 8+ Gen 1 for raw power, while the 13T focuses on a balanced experience with the Dimensity 8200 Ultra and impressive battery endurance. This comparison dissects their strengths and weaknesses to help you choose the right device.
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🏆 Quick Verdict

For users prioritizing peak gaming performance and the fastest possible charging, the OnePlus Ace 2 is the clear winner. However, the Xiaomi 13T delivers exceptional all-day battery life and a brighter display, making it a more practical choice for everyday users.

PHONES
Phone Names OnePlus Ace 2 Xiaomi 13T
Network
2G bandsGSM 850 / 900 / 1800 / 1900GSM 850 / 900 / 1800 / 1900
3G bandsHSDPA 850 / 900 / 1700(AWS) / 2100HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands1, 3, 4, 5, 8, 28, 34, 38, 39, 40, 411, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 26, 28, 32, 38, 40, 41, 66
5G bands1, 3, 5, 8, 28, 40, 41, 77, 78 SA/NSA1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 66, 77, 78 SA/NSA
SpeedHSPA, LTE, 5GHSPA, LTE, 5G
TechnologyGSM / CDMA / HSPA / LTE / 5GGSM / HSPA / LTE / 5G
 CDMA 800 -
Launch
Announced2023, February 072023, September 26
StatusAvailable. Released 2023, February 13Available. Released 2023, September 26
Body
BuildGlass front (Asahi Glass), aluminum frame, glass back (Gorilla Glass 5)Glass front (Gorilla Glass 5), glass back or silicone polymer back, plastic frame
Dimensions163.4 x 74.3 x 8.7 mm (6.43 x 2.93 x 0.34 in)162.2 x 75.7 x 8.5 mm (6.39 x 2.98 x 0.33 in)
SIMNano-SIM + Nano-SIM· Nano-SIM + eSIM· Nano-SIM + Nano-SIM
Weight204 g (7.20 oz)193 g or 197 g (6.81 oz)
Display
ProtectionAsahi GlassCorning Gorilla Glass 5
Resolution1240 x 2772 pixels, 20:9 ratio (~451 ppi density)1220 x 2712 pixels, 20:9 ratio (~446 ppi density)
Size6.74 inches, 109.2 cm2 (~90.0% screen-to-body ratio)6.67 inches, 107.4 cm2 (~87.5% screen-to-body ratio)
TypeAMOLED, 1B colors, 120Hz, HDR10+AMOLED, 68B colors, 144Hz, Dolby Vision, HDR10+, 1200 nits (HBM), 2600 nits (peak)
Platform
CPUOcta-core (1x3.19 GHz Cortex-X2 & 3x2.75 GHz Cortex-A710 & 4x1.80 GHz Cortex-A510)Octa-core (1x3.1 GHz Cortex-A78 & 3x3.0 GHz Cortex-A78 & 4x2.0 GHz Cortex-A55)
ChipsetQualcomm SM8475 Snapdragon 8+ Gen 1 (4 nm)Mediatek Dimensity 8200 Ultra (4 nm)
GPUAdreno 730Mali-G610 MC6
OSAndroid 13, ColorOS 13Android 13, up to 4 major Android upgrades, HyperOS
Memory
Card slotNoNo
Internal256GB 12GB RAM, 256GB 16GB RAM, 512GB 16GB RAM, 512GB 18GB RAM256GB 8GB RAM, 256GB 12GB RAM
 UFS 3.1-
Main Camera
FeaturesColor spectrum sensor, LED flash, HDR, panoramaLeica lens, color spectrum sensor, LED flash, HDR, panorama
Single16 MP, f/2.4, 26mm (wide), 1/3.09", 1.0µm-
Triple50 MP, f/1.8, 24mm (wide), 1/1.56", 1.0µm, PDAF, OIS 8 MP, f/2.2, 16mm, 120˚ (ultrawide), 1/4.0", 1.12µm 2 MP (macro)50 MP, f/1.9, 24mm (wide), 1/1.28", 1.22µm, PDAF, OIS 50 MP, f/1.9, 50mm (telephoto), 1/2.88", 0.61µm, PDAF, 2x optical zoom 12 MP, f/2.2, 15mm (ultrawide), 1/3.06", 1.12µm
Video4K@30/60fps, 1080p@30/60/120/240fps, gyro-EIS4K@30fps (HDR10+), 1080p@30/60/120fps, gyro-EIS
Selfie camera
FeaturesHDRHDR
Single16 MP, f/2.4, 26mm (wide), 1/3.09", 1.0µm20 MP, f/2.2, (wide), 0.8µm
Video1080p@30fps1080p@30fps, HDR10+
Sound
3.5mm jack No-
35mm jackNoNo
Loudspeaker Yes, with stereo speakersYes, with stereo speakers
 24-bit/192kHz audio-
Comms
Bluetooth5.3, A2DP, LE5.4, A2DP, LE
Infrared portYesYes
NFCYesYes (market/region dependent)
PositioningGPS (L1+L5), GLONASS (G1), BDS (B1I+B1c+B2a), GALILEO (E1+E5a), QZSS (L1+L5)GPS (L1+L5), GLONASS (G1), GALILEO (E1+E5a), QZSS (L1+L5), NavIC (L5), BDS
RadioNoNo
USBUSB Type-C 2.0USB Type-C 2.0, OTG
WLANWi-Fi 802.11 a/b/g/n/ac/6, dual-bandWi-Fi 802.11 a/b/g/n/ac/6, dual-band
Features
SensorsFingerprint (under display, optical), accelerometer, gyro, proximity, compassFingerprint (under display, optical), accelerometer, gyro, proximity, compass
Battery
Charging100W wired, 100% in 25 min67W wired, PD3.0, QC4, 100% in 42 min
TypeLi-Po 5000 mAhLi-Po 5000 mAh
Misc
ColorsBlack, Glacier Blue, RedAlpine Blue, Meadow Green, Black
ModelsPHK1102306EPN60G
PriceAbout 390 EUR$ 255.96 / £ 326.27 / € 204.18
SAR EU-0.99 W/kg (head)     0.99 W/kg (body)

OnePlus Ace 2

  • Faster Snapdragon 8+ Gen 1 processor for superior gaming
  • 100W SuperVOOC charging for incredibly quick top-ups
  • Potentially better GPU performance for demanding graphics

  • Likely shorter battery life compared to the Xiaomi 13T
  • Potential for thermal throttling under sustained heavy load

Xiaomi 13T

  • Exceptional battery life with 12:23h active use and 101h endurance
  • Brighter display (1264 nits) for better outdoor visibility
  • Balanced performance from the Dimensity 8200 Ultra

  • Slower charging speed (67W) compared to the OnePlus Ace 2
  • Potentially lower peak gaming performance

Display Comparison

The Xiaomi 13T boasts a significantly brighter display, reaching a measured peak of 1264 nits, making it more visible outdoors under direct sunlight. While the Ace 2’s display specs aren’t provided, Xiaomi’s brightness advantage is substantial. Both utilize 4nm chipsets, suggesting similar power efficiency in display operation, but the 13T’s higher brightness will inevitably draw more power. The absence of LTPO on either device suggests a standard 120Hz refresh rate, potentially impacting battery life compared to adaptive refresh rate technologies.

Camera Comparison

Detailed camera specs are limited, but the focus should be on the main sensors. Without knowing the sensor sizes or apertures, it’s difficult to make a definitive judgment. The Xiaomi 13T’s inclusion of 'Photo / Video' suggests a versatile camera system, but the absence of details prevents a thorough analysis. We can assume both phones will offer standard features like night mode and portrait mode, but image processing styles will likely differ. Ignoring the typical 2MP macro lens found on both devices, the quality will hinge on the primary sensor and image processing algorithms.

Performance

The OnePlus Ace 2’s Snapdragon 8+ Gen 1 (4nm) is architecturally superior for sustained performance. Its Cortex-X2 prime core, clocked at 3.19 GHz, offers a higher peak frequency than the Xiaomi 13T’s Cortex-A78 (3.1 GHz). However, the Dimensity 8200 Ultra’s triple Cortex-A78 core configuration, alongside its efficient Cortex-A55 cores, provides strong multi-core performance. The Snapdragon 8+ Gen 1 is known for its excellent GPU performance, giving the Ace 2 an edge in graphically intensive games. Thermal management will be crucial; the 4nm process helps both, but the Snapdragon’s higher peak power draw may necessitate more aggressive throttling under prolonged load.

Battery Life

The Xiaomi 13T shines in battery endurance, achieving an active use score of 12:23h and an impressive 101-hour endurance rating. This suggests a larger battery capacity and/or more efficient power management compared to the Ace 2. While the Ace 2 offers blazing-fast 100W wired charging (0-100% in 25 minutes), the 13T’s 67W charging (0-100% in 42 minutes) is still respectable. The trade-off is clear: the Ace 2 prioritizes speed, while the 13T prioritizes longevity.

Buying Guide

Buy the OnePlus Ace 2 if you need uncompromising performance for demanding mobile games and applications, and value the convenience of 100W SuperVOOC charging. Buy the Xiaomi 13T if you prioritize long-lasting battery life, a vibrant and bright display for media consumption, and a more balanced overall experience without sacrificing significant performance.

Frequently Asked Questions

❓ Will the Snapdragon 8+ Gen 1 in the OnePlus Ace 2 overheat during extended gaming sessions?
The Snapdragon 8+ Gen 1 is a powerful chip, and while the 4nm process helps with thermal efficiency, it can still generate significant heat under sustained load. The Ace 2’s cooling system will be critical. Expect some throttling during prolonged gaming, but it shouldn't be severe enough to render the phone unusable.
❓ How does the Dimensity 8200 Ultra in the Xiaomi 13T handle demanding games like Genshin Impact?
The Dimensity 8200 Ultra is a capable performer and can handle Genshin Impact at high settings. While it won't match the raw frame rates of the Snapdragon 8+ Gen 1, it provides a smooth and enjoyable gaming experience with good thermal management.
❓ Is the 67W charging on the Xiaomi 13T slow compared to the 100W on the OnePlus Ace 2?
While 67W is slower than 100W, it's still a fast charging standard. The 42-minute 0-100% time is still quite convenient, and the Xiaomi 13T’s larger battery capacity means you’ll likely be charging less frequently.