| Property | Value |
| Brand | Xiaomi |
| Model | 12X |
| Connectivity |
| Network | GSM / CDMA / HSPA / EVDO / LTE / 5G |
| 2G connectivity | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 3G connectivity | HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100 |
| 4G connectivity | 1, 2, 3, 4, 5, 7, 8, 18, 19, 26, 34, 38, 39, 40, 41, 42 |
| 5G connectivity | 1, 3, 5, 8, 28, 38, 40, 41, 77, 78 SA/NSA |
| Network speed | HSPA 42.2/5.76 Mbps, LTE-A, 5G |
| GPRS | No |
| EDGE | No |
| Date 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 gr. | 176 |
| Weight oz | 6.21 |
| SIM | Dual SIM (Nano-SIM, dual stand-by) |
| Colors | Black, Blue, Pink |
| Screen |
| Type of screen | OLED, 1B colors, 120Hz, Dolby Vision, HDR10+, 1100 nits (peak) |
| Screen resolution | 1080 x 2400 pixels, 20:9 ratio (~419 ppi density) |
| Screen size | 6.28 inches, 95.2 cm2 (~89.2% screen-to-body ratio) |
| Platform |
| OS |
Android 12, MIUI 13 |
| CPU | Octa-core (1x3.2 GHz Kryo 585 & 3x2.42 GHz Kryo 585 & 4x1.80 GHz Kryo 585) |
| Chipset | Qualcomm SM8250-AC Snapdragon 870 5G (7 nm) |
| GPU | Adreno 650 |
| Storage and memory |
| Memory card | No |
| Internal memory |
128 GB, 256 GB (See other devices with 128 GB) (See other devices with 256 GB)
|
RAM |
8 GB/12 GB |
| Cameras |
| Main camera | 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, 50mm (telephoto macro), AF |
| Video features | 8K@24fps, 4K@30/60fps, 1080p@30/120/240/960fps, gyro-EIS |
| Secondary camera | 32 MP, 26mm (wide), 0.7µm |
| Audio connector | No |
| Communications |
| WLAN | Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct, hotspot |
| Bluetooth | 5.2, A2DP, LE |
| GPS | Yes, with A-GPS. Up to tri-band: GLONASS (1), BDS (3), GALILEO (2), QZSS (2), NavIC |
| NFC | Yes |
| Radio | No |
| USB | USB Type-C 2.0, USB On-The-Go |
| Sensors | Fingerprint (under display, optical), accelerometer, proximity, gyro, compass |
| Battery |
| Battery | Li-Po 4500 mAh, non-removable |
| Fast charging | Yes |
| Fast charging power | 67W, 100% |
| Wireless charging | No |
