Xiaomi 12X

Specifications
Xiaomi 12X
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  • 6.28" 1080x2400 pixels
  • 50MP 4320p
  • 8/12GB RAM Snapdragon 870 5G
  • 4500mAh 67W
Released 2021, December 31 176g, 8.2mm thickness Android 11, MIUI 13 128GB/256GB storage, no card slot
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Network
Technology GSM / CDMA / HSPA / EVDO / LTE / 5G
2G bands GSM 850 / 900 / 1800 / 1900
  CDMA 800
3G bands HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100
  CDMA2000 1xEV-DO
4G bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 26, 28, 32, 38, 39, 40, 41, 42, 48, 66 - International
  1, 2, 3, 4, 5, 7, 8, 18, 19, 26, 34, 38, 39, 40, 41, 42 - China
5G bands 1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 66, 77, 78 SA/NSA - International
  1, 3, 5, 8, 28, 38, 40, 41, 77, 78 SA/NSA - China
Speed HSPA, LTE, 5G
Launch
Announced 2021, December 28
Status Available. Released 2021, December 31
Body
Dimensions 152.7 x 69.9 x 8.2 mm (6.01 x 2.75 x 0.32 in)
Weight 176 g (6.21 oz)
SIM Nano-SIM + Nano-SIM
Display
Type AMOLED, 68B colors, 120Hz, Dolby Vision, HDR10+, 1100 nits (peak)
Size 6.28 inches, 95.2 cm2 (~89.2% screen-to-body ratio)
Resolution 1080 x 2400 pixels, 20:9 ratio (~419 ppi density)
Protection Corning Gorilla Glass Victus
Platform
OS Android 11, MIUI 13
Chipset Qualcomm SM8250-AC Snapdragon 870 5G (7 nm)
CPU Octa-core (1x3.2 GHz Kryo 585 & 3x2.42 GHz Kryo 585 & 4x1.80 GHz Kryo 585)
GPU Adreno 650
Memory
Card slot No
Internal 128GB 8GB RAM, 256GB 8GB RAM, 256GB 12GB RAM
 UFS 3.1
Main Camera
Triple 50 MP, f/1.9, 26mm (wide), 1/1.56", 1.0µm, PDAF, OIS
13 MP, f/2.4, 12mm, 123˚ (ultrawide), 1/3.06", 1.12µm
5 MP, f/2.4, 50mm (telephoto macro), AF
Features Dual-LED dual-tone flash, HDR, panorama
Video 8K@24fps, 4K@30/60fps, 1080p@30/120/240/960fps, gyro-EIS
Selfie Camera
Single 32 MP, f/2.5, 26mm (wide), 0.7µm
Features HDR, panorama
Video 1080p@30/60fps, 720p@120fps, HDR
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Sound
Loudspeaker Yes, with stereo speakers
3.5mm jack No
 24-bit/192kHz Hi-Res audio
Tuned by Harman Kardon
Comms
WLAN Wi-Fi 802.11 a/b/g/n/ac, Wi-Fi 6 (market dependent), dual-band, Wi-Fi Direct
Bluetooth 5.1 / 5.2, A2DP, LE
Positioning GPS (L1+L5), GLONASS (L1), BDS (B1I+B1c+B2a), GALILEO (E1+E5a), QZSS (L1+L5), NavIC (L5)
NFC Yes (market/region dependent)
Infrared port Yes
Radio No
USB USB Type-C 2.0, OTG
Features
Sensors Fingerprint (under display, optical), accelerometer, proximity, gyro, compass
Battery
Type Li-Po 4500 mAh
Charging 67W wired, PD3.0, QC4, 100% in 39 min
Misc
Colors Gray, Blue, Purple
Models 2112123AC, 2112123AG
SAR EU 0.59 W/kg (head)     1.00 W/kg (body)    
Price £ 333.74 / € 314.99
Tests
Performance AnTuTu: 598003 (v8), 690298 (v9)
GeekBench: 3168 (v5.1)
GFXBench: 47fps (ES 3.1 onscreen)
Display Contrast ratio: Infinite (nominal)
Camera Photo / Video
Loudspeaker -25.6 LUFS (Very good)
Battery (old) Endurance rating 105h
Xiaomi 12X 256GB 8GB RAM 128GB 8GB RAM

User opinions and reviews

  • Anonymous
  • 03 Feb 2025
  • p27

I found the cause of the problem. If the screen brightness is at least 60%, it switches between 120 and 60 Hz. This is ridiculous.

  • pablito
  • 02 Feb 2025
  • p27

Hello friends, I just bought the device. The adaptive refresh rate is not working properly. In the gsmarena review video, the screen was dropping to 60 when idle in the adaptive option, but it does not drop below 120 when I am in adaptive mode. Does ...

  • Rolless
  • 25 Jan 2025
  • 0C2

What kind of update?... Do you know if it will receive android 14? I read some where that android 14 would be last update for 12x

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