Codename: polaris
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Official Mi MIX 2S firmware (codename polaris).
The newest Fastboot ROM is V12.5.1.0.QDGCNXM (Android 10), 3.0 GB, released 2021-07-07 03:00.
The newest Recovery ROM is V12.5.1.0.QDGCNXM.
Files are served directly from Xiaomi’s servers. Need flashing help? Browse our guides.

Xiaomi Mi Mix 2S was announced in 2018, March. Released 2018, April, runs Android 8.0 (Oreo), upgradable to Android 10, MIUI 12, powered by Qualcomm SDM845 Snapdragon 845 (10 nm), memory: 64GB 6GB RAM, 128GB 6GB RAM, 256GB 8GB RAM, available in Black, White.
| Network | |
|---|---|
| Technology | GSM / CDMA / HSPA / EVDO / LTE |
| Launch | |
|---|---|
| Announced | 2018, March. Released 2018, April |
| Status | Discontinued |
| Body | |
|---|---|
| Dimensions | 150.9 x 74.9 x 8.1 mm (5.94 x 2.95 x 0.32 in) |
| Weight | 191 g (6.74 oz) |
| Build | Glass front (Gorilla Glass 4), ceramic back, aluminum frame |
| SIM | Nano-SIM + Nano-SIM |
| Display | |
|---|---|
| Type | IPS LCD |
| Size | 5.99 inches, 92.6 cm2 (~81.9% screen-to-body ratio) |
| Resolution | 1080 x 2160 pixels, 18:9 ratio (~403 ppi density) |
| Protection | Corning Gorilla Glass 4 |
| Platform | |
|---|---|
| OS | Android 8.0 (Oreo), upgradable to Android 10, MIUI 12 |
| Chipset | Qualcomm SDM845 Snapdragon 845 (10 nm) |
| CPU | Octa-core (4x2.8 GHz Kryo 385 Gold & 4x1.8 GHz Kryo 385 Silver) |
| GPU | Adreno 630 |
| Memory | |
|---|---|
| Card slot | No |
| Internal | 64GB 6GB RAM, 128GB 6GB RAM, 256GB 8GB RAM |
| Main Camera | |
|---|---|
| Dual | 12 MP, f/1.8, (wide), 1/2.55", 1.4µm, dual pixel PDAF, 4-axis OIS 12 MP, f/2.4, (telephoto), 1/3.4", 1.0µm, AF, 2x optical zoom |
| Features | Dual-LED dual-tone flash, HDR, panorama |
| Video | 4K@30fps, 1080p@30/120fps, 720p@240fps |
| Selfie camera | |
|---|---|
| Single | 5 MP, f/2.0, (wide), 1/4.0", 1.4µm |
| Video | 1080p@30fps |
| Sound | |
|---|---|
| Loudspeaker | Yes |
| 3.5mm jack | No |
| Comms | |
|---|---|
| WLAN | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct |
| Bluetooth | 5.0, A2DP, LE |
| Positioning | GPS, GLONASS, BDS |
| NFC | Yes |
| Radio | No |
| USB | USB Type-C 2.0 |
| Features | |
|---|---|
| Sensors | Fingerprint (rear-mounted), accelerometer, gyro, compass |
| Battery | |
|---|---|
| Type | Li-Ion 3400 mAh, non-removable |
| Charging | 18W wired, QC3 7.5W wireless (Qi) |
| Misc | |
|---|---|
| Colors | Black, White |
| Models | M1803D5XA |
| SAR | 0.54 W/kg (head) 1.59 W/kg (body) |
| Price | About 270 EUR |
| Our Tests | |
|---|---|
| Performance | AnTuTu: 270814 (v7) GeekBench: 9158 (v4.4) GFXBench: 34fps (ES 3.1 onscreen) |
| Loudspeaker | Voice 68dB / Noise 70dB / Ring 81dB |
| Audio quality | Noise -93.0dB / Crosstalk -92.5dB |
| Battery (old) | Endurance rating 59h |
10 versions found
| Version | Android | Type | Size | Released | Downloads | Download |
|---|---|---|---|---|---|---|
|
V12.5.1.0.QDGCNXM
China
|
Android 10 | Recovery | 2.2 GB | 2021-07-16 03:00 | 0 | Download |
|
V12.5.1.0.QDGCNXM
China
|
Android 10 | Fastboot | 3.0 GB | 2021-07-07 03:00 | 0 | Download |
|
V12.0.3.0.QDGMIXM
Global
|
Android 10 | Recovery | 2.0 GB | 2021-01-04 03:00 | 0 | Download |
|
V12.0.3.0.QDGMIXM
Global
|
Android 10 | Fastboot | 2.6 GB | 2020-12-28 03:00 | 0 | Download |
|
V12.0.2.0.QDGRUXM
Russia
|
Android 10 | Recovery | 2.0 GB | 2020-12-22 03:00 | 0 | Download |
|
V12.0.2.0.QDGRUXM
Russia
|
Android 10 | Fastboot | 2.6 GB | 2020-12-15 03:00 | 0 | Download |
|
Unknown
|
Android 10 | Recovery | 2.3 GB | 2020-09-04 03:00 | 0 | Download |
|
Unknown
|
Android 9 | Fastboot | 2.8 GB | 2019-09-04 03:00 | 0 | Download |
|
Unknown
|
Android 9 | Recovery | 2.0 GB | 2019-06-28 03:00 | 0 | Download |
|
Unknown
|
Android 9 | Fastboot | 2.7 GB | 2019-06-28 03:00 | 0 | Download |
Step-by-step guides for technicians working on the Mi MIX 2S: