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Xiaomi 12X
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Phone Insight
Full Specifications September 3, 2026
Xiaomi · 2021

Xiaomi 12X

Xiaomi 12X Android smartphone. Announced Dec 2021. Features 6.28″ display, Snapdragon 870 5G chipset, 4500 mAh battery, 256 GB storage, 12 GB RAM, Corning Gorilla Glass Victus.

Display 6.28"
Chipset Snapdragon 870 5G
RAM 8/12 GB
Storage 128GB/256GB storage, no card slot
Camera 50 MP
Battery 4500 mAh
Build 176g, 8.2mm thickness

Launch

Announced 2021, December 28
Status Available. Released 2021, December 31

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

Display

Type AMOLED, 68B colors, 120Hz, Dolby Vision, HDR10+, 1100 nits (peak)
Size 6.28 inches, 95.2 cm 2 (~89.2% screen-to-body ratio)
Resolution 1080 x 2400 pixels, 20:9 ratio (~419 ppi density)
Protection Corning Gorilla Glass Victus

Memory

Card slot No
Internal 128GB 8GB RAM, 256GB 8GB RAM, 256GB 12GB RAM
memoryother 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

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

Battery

Type Li-Po 4500 mAh
Charging 67W wired, PD3.0, QC4, 100% in 39 min

Sound

Loudspeaker Yes, with stereo speakers
3.5mm jack No
optionalother 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

Network

Technology GSM / CDMA / HSPA / EVDO / LTE / 5G
2G bands GSM 850 / 900 / 1800 / 1900
3G bands HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100
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
5G bands 1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 66, 77, 78 SA/NSA - International
Speed HSPA, LTE, 5G

Features

Sensors Fingerprint (under display, optical), accelerometer, proximity, gyro, compass

Our 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

Misc

Colors Gray, Blue, Purple
Models 2112123AC, 2112123AG
SAR EU 0.59 W/kg (head)     1.00 W/kg (body)
In depth

Full specifications

Announced 2021, December 28
Status Available. Released 2021, December 31
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
Type AMOLED, 68B colors, 120Hz, Dolby Vision, HDR10+, 1100 nits (peak)
Size 6.28 inches, 95.2 cm 2 (~89.2% screen-to-body ratio)
Resolution 1080 x 2400 pixels, 20:9 ratio (~419 ppi density)
Protection Corning Gorilla Glass Victus
Card slot No
Internal 128GB 8GB RAM, 256GB 8GB RAM, 256GB 12GB RAM
memoryother UFS 3.1
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
Single 32 MP, f/2.5, 26mm (wide), 0.7µm
Features HDR, panorama
Video 1080p@30/60fps, 720p@120fps, HDR
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
Type Li-Po 4500 mAh
Charging 67W wired, PD3.0, QC4, 100% in 39 min
Loudspeaker Yes, with stereo speakers
3.5mm jack No
optionalother 24-bit/192kHz Hi-Res audio Tuned by Harman Kardon
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
Technology GSM / CDMA / HSPA / EVDO / LTE / 5G
2G bands GSM 850 / 900 / 1800 / 1900
3G bands HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100
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
5G bands 1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 66, 77, 78 SA/NSA - International
Speed HSPA, LTE, 5G
Sensors Fingerprint (under display, optical), accelerometer, proximity, gyro, compass
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
Colors Gray, Blue, Purple
Models 2112123AC, 2112123AG
SAR EU 0.59 W/kg (head)     1.00 W/kg (body)
Price About 180 EUR
PhoneInsight Benchmark
74.9/100
Premium

A specs-derived composite score, not a lab benchmark -- useful for ranking and comparison.

Processor 72.4
Display 80.7
Camera 82
Battery 79.9
1.5%Popularity rank
2,604,987 hitsTotal views