| Local Name | Mi Mix 3 5G |
| Technology | GSM / CDMA / HSPA / EVDO / LTE / 5G |
| 4G Bands | LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 20(800), 28(700), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500) |
| 3G Bands | HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 | CDMA2000 1xEV-DO |
| 2G Bands | GSM 850 / 900 / 1800 / 1900 | CDMA 800 / 1900 & TD-SCDMA |
| Speed | HSPA 42.2/5.76 Mbps, LTE-A (5CA) Cat18 1200/150 Mbps; 5G (2+ Gbps DL) |
| Announced | 2019, February |
| Status | Available. Released 2019, May |
| Dimensions | 157.9 x 74.7 x 9.4 mm (6.22 x 2.94 x 0.37 in) |
| Weight | 225 g (7.94 oz) |
| Build | Glass front (Gorilla Glass 5), ceramic back, aluminum frame (7000 series) |
| SIM | Nano-SIM |
| Display Type | Super AMOLED capacitive touchscreen, 16M colors |
| Screen Size | 6.39 inches, 100.2 cm2 (~85.0% screen-to-body ratio) |
| Resolution | 1080 x 2340 pixels, 19.5:9 ratio (~403 ppi density) |
| Protection | Corning Gorilla Glass 5 | HDR |
| OS | Android 9.0 (Pie); MIUI 10 |
| Chipset | Qualcomm SM8150 Snapdragon 855 (7 nm) |
| CPU | Octa-core (1x2.84 GHz Kryo 485 & 3x2.42 GHz Kryo 485 & 4x1.78 GHz Kryo 485) |
| GPU | Adreno 640 |
| Card Slot | No |
| Internal Memory | 64GB 6GB RAM, 128GB 6GB RAM | UFS 2.1 |
| Camera Features | LED flash, HDR |
| Video | 1080p@30fps |
| Loudspeaker | Yes |
| 3.5mm Jack | No |
| WLAN | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot |
| Bluetooth | 5.0, A2DP, LE, aptX HD |
| GPS | Yes, with dual-band A-GPS, GLONASS, BDS, GALILEO, QZSS |
| NFC | Yes |
| Radio | No |
| USB | Type-C 1.0 reversible connector |
| Sensors | Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass |
| Battery | Non-removable Li-Po 3800 mAh battery |
| Colors | Sapphire Blue |
