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Full specifications
Every available group and stored value, aligned by field.
LAUNCH DATE3 fields
| Specification | K15x | Mi MIX 4 |
|---|---|---|
| Announced | 2026, September 30 (China) | August 16, 2021 |
| Released | Release date not recorded | 2021-08-16 |
| Status | Available | Available |
NETWORK6 fields
| Specification | K15x | Mi MIX 4 |
|---|---|---|
| 2G Bands | — | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 3G Bands | — | HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100; CDMA2000 1xEV-DO |
| 4G LTE | — | 1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28, 34, 38, 39, 40, 41, 42 |
| 5G | — | 1, 3, 5, 8, 28, 41, 77, 78, 79 SA/NSA |
| Speed | — | LTE, 5G |
| Technology | GSM / LTE / 5G | 5G/4G/LTE/GSM |
BODY6 fields
| Specification | K15x | Mi MIX 4 |
|---|---|---|
| Build | — | Glass front (Gorilla Glass Victus), ceramic back, aluminum frame |
| Colors | Glacier White, Prism Purple | — |
| Dimensions | — | 162.6 x 75.4 x 8 mm (6.40 x 2.97 x 0.31 in) |
| IP Rating | — | No IP rating |
| SIM | — | Nano-SIM + Nano-SIM |
| Weight | — | 225 g (7.94 oz) |
DISPLAY7 fields
| Specification | K15x | Mi MIX 4 |
|---|---|---|
| Brightness | — | 800 nits (HBM) |
| Protection | — | Corning Gorilla Glass Victus |
| Refresh Rate | 120Hz | 120Hz |
| Resolution | HD+ | 1080 x 2400 pixels, 20:9 ratio (~395 ppi density) |
| Screen-to-body | — | ~87.6% |
| Size | 6.75 inches | 6.67 inches, 107.4 cm2 (~87.6% screen-to-body ratio) |
| Type | LCD | AMOLED, 1B colors, 120Hz, HDR10+, Dolby Vision, 800 nits (HBM) |
PLATFORM4 fields
| Specification | K15x | Mi MIX 4 |
|---|---|---|
| CPU | — | Octa-core (1x2.99 GHz Cortex-X1 & 3x2.42 GHz Cortex-A78 & 4x1.80 GHz Cortex-A55) |
| Chipset | MediaTek Dimensity 6300 (6 nm) | Qualcomm SM8350 Snapdragon 888+ 5G (5 nm) |
| GPU | — | Adreno 660 |
| OS | — | Android 11, MIUI 12.5 |
MEMORY5 fields
| Specification | K15x | Mi MIX 4 |
|---|---|---|
| Card slot | — | No |
| Internal | 128GB / 256GB | 128GB, 256GB, 512GB |
| RAM | — | 8GB RAM, 12GB RAM |
| Storage Type | UFS 2.2 (LPDDR4X RAM) | — |
| Storage/RAM variants | — | 128GB, 256GB, 512GB; 8GB RAM, 12GB RAM |
MAIN CAMERA3 fields
| Specification | K15x | Mi MIX 4 |
|---|---|---|
| Features | — | Laser AF, color spectrum sensor, Dual-LED flash, HDR, panorama |
| MAIN CAMERA | 13 MP (main) | 108 MP, f/1.9, 24mm (wide), 1/1.33", 0.8µm, PDAF, OIS 8 MP, f/4.1, 120mm (periscope telephoto), PDAF, OIS, 5x optical zoom 13 MP, f/2.2, 12mm, 123˚ (ultrawide), 1/3.06", 1.12µm |
| Video | — | 8K@24fps, 4K@30/60fps, 1080p@30/60/120/480fps; gyro-EIS, HDR10+ |
SELFIE CAMERA3 fields
| Specification | K15x | Mi MIX 4 |
|---|---|---|
| Features | — | HDR |
| Selfie camera | 5 MP | 20 MP, 27mm (wide), 1/3.4", 0.8µm, under display |
| Video | — | 1080p@30fps |
SOUND2 fields
| Specification | K15x | Mi MIX 4 |
|---|---|---|
| 3.5mm jack | — | No |
| Loudspeaker | — | Yes, with stereo speakers |
COMMUNICATION6 fields
| Specification | K15x | Mi MIX 4 |
|---|---|---|
| Bluetooth | 5.4 | 5.2, A2DP, LE, aptX HD |
| NFC | No | Yes |
| Positioning | — | GPS (L1+L5), GLONASS (G1), BDS (B1I+B1c+B2a), GALILEO (E1+E5a), QZSS (L1+L5), NavIC (L5) |
| Radio | — | No |
| USB | USB Type-C | USB Type-C 2.0 |
| WLAN | Wi-Fi 5 | Wi-Fi 802.11 a/b/g/n/ac/6e, dual-band, Wi-Fi Direct |
FEATURES1 field
| Specification | K15x | Mi MIX 4 |
|---|---|---|
| Sensors | — | Fingerprint (under display, optical), accelerometer, gyro, proximity, compass |
BATTERY3 fields
| Specification | K15x | Mi MIX 4 |
|---|---|---|
| Capacity | 6500 mAh | 4500 mAh |
| Charging Type | 45W wired | 120W wired, PD3.0, QC4, 100% in 15 min 50W wireless, 100% in 28 min |
| Type | — | Li-Po 4500 mAh |
ADDITIONAL INFORMATION6 fields
| Specification | K15x | Mi MIX 4 |
|---|---|---|
| Colors | Glacier White; Prism Purple | Ceramic Black, Ceramic White, Shadow Gray |
| Launch Price | CNY 1,399 (8GB+128GB) — China | — |
| Launch Price (USD) | — | $689.00 (reference only — see Price in Nigeria above for the actual retail price) |
| Models | — | 2106118C |
| Models and regions | China | — |
| Price in Nigeria | ₦292,400 (Stored estimate) | ₦290,000 (Stored estimate) |
SECURITY1 field
| Specification | K15x | Mi MIX 4 |
|---|---|---|
| Security | Side-mounted fingerprint | Biometric security: Fingerprint (under display, optical). |