| Hardware and OS | Realme Q3 5G | |
| Operating system | Android 11, Realme UI 2.0 | |
| Processor | Octa-core (2x2.2 GHz Kryo 570 & 6x1.8 GHz Kryo 570) | |
| Chipset | Qualcomm SM7225 Snapdragon 750G 5G (8 nm) | |
| Internal memory | 128GB 6GB RAM, 128GB 8GB RAM | |
| External memory | microSDXC (dedicated slot) | |
| GPU | Adreno 619 | |
| Display | Realme Q3 5G | other phones |
| Size | 6.5 inches, 102.0 cm2 | |
| Resolution | 1080 x 2400 pixels, 20:9 ratio | |
| Type | IPS LCD, 120Hz, 480 nits (typ), 600 nits (peak) | |
| Main Camera | Realme Q3 5G | other phones |
| Camera | 48 MP, f/1.8, 26mm (wide), PDAF
8 MP, f/2.3, 16mm, 119?? (ultrawide), 1/4.0", 1.12µm
2 MP, f/2.4, (macro) | |
| Features | LED flash, HDR, panorama | |
| Video | 4K@30fps, 1080p@30/60fps; gyro-EIS | |
| Selfie camera | Realme Q3 5G | other phones |
| Camera | 16 MP, f/2.1, 26mm (wide) | |
| Features | HDR, panorama | |
| Video | 1080p@30fps | |
| Connectivity | Realme Q3 5G | other phones |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | |
| 3G Network | HSDPA 800 / 850 / 900 / 1900 / 2100 | |
| 4G Network | 1, 3, 5, 7, 8, 34, 38, 39, 40, 41 | |
| 5G Network | 1, 28, 41, 78 SA/NSA | |
| Bluetooth | 5.1, A2DP, LE | |
| CDMA | CDMA 800 | |
| GPS | Yes, with A-GPS, GLONASS, BDS, GALILEO, QZSS | |
| NFC | No | |
| Speed | HSPA 42.2/5.76 Mbps, LTE-A, 5G | |
| Technology | GSM / CDMA / HSPA / CDMA2000 / LTE / 5G | |
| USB | USB Type-C 2.0 | |
| WLAN | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot | |
| Multimedia | Realme Q3 5G | other phones |
| 3.5 mm Jack | Yes | |
| Loudspeaker | Yes | |
| Multimedia | 24-bit/192kHz audio | |
| Radio | Unspecified | |
| Battery | Realme Q3 5G | other phones |
| Type | Li-Po 5000 mAh, non-removable | |
| Charging | Fast charging 30W, 100% in 63 min (advertised) | |
| Design | Realme Q3 5G | other phones |
| Colors | Black, Silver | |
| Dimensions | 162.5 x 74.8 x 8.8 mm (6.40 x 2.94 x 0.35 in) | |
| Weight | 189 g (6.67 oz) | |
| SIM | Dual SIM (Nano-SIM, dual stand-by) | |
| Features | Realme Q3 5G | other phones |
| Sensors | Fingerprint (side-mounted), accelerometer, gyro, proximity, compass | |
