| Hardware and OS | vivo U3x | |
| Operating system | Android 11, OriginOS for iQOO 1.0 | |
| Processor | Octa-core (2x2.0 GHz Kryo 460, 6x1.8 GHz Kryo 460) | |
| GPU | Adreno 619 | |
| RAM | 4 GB, 6 GB, 8 GB | |
| Internal Storage | 64 GB, 128 GB | |
| Memory Card Slot | No | |
| User Interface | Yes | |
| Display | vivo U3x | other phones |
| Type | IPS LCD | |
| Size | 6.58 inches | |
| Resolution | 1080 x 2408 pixels | |
| Colors | 16M | |
| Pixel Density | 401 ppi | |
| Touchscreen | Yes | |
| Connectivity | vivo U3x | other phones |
| 4G Network | 1, 3, 4, 5, 8, 28, 34, 38, 39, 40, 41 | |
| 5G Network | 1, 3, 28, 41, 77, 78 SA/NSA | |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct, hotspot | |
| GPS | Yes, with A-GPS, GLONASS, BDS, GALILEO | |
| NFC | No | |
| USB | USB Type-C 2.0, USB On-The-Go | |
| Speed | HSPA 42.2/5.76 Mbps, LTE-A, 5G | |
| SIM | Nano SIM | |
| Dual SIM | Dual SIM (Nano-SIM, dual stand-by) | |
| Wireless Charging | No | |
| Camera | vivo U3x | other phones |
| Main camera | 13 MP (wide), 2 MP (depth) | |
| Features | LED flash, HDR, panorama | |
| Image | 2160p | |
| Selfie camera | 8 MP (wide) | |
| Multimedia | vivo U3x | other phones |
| Loudspeaker | Yes | |
| Handsfree | Yes | |
| Radio | No | |
| Video Playback | Yes | |
| Video Out | Yes | |
| Ring Tones | Yes | |
| 3.5 mm Jack | Yes | |
| Design | vivo U3x | other phones |
| Dimensions | 164.2 x 75.4 x 8.4 mm | |
| Waterproof | No | |
| Weight | 185.5 g | |
| Battery | vivo U3x | other phones |
| Capacity | Li-Po 5000 mAh, Fast charging 18W | |
| Placement | Non-removable | |
| Other | vivo U3x | other phones |
| Sensors | Fingerprint (side-mounted), accelerometer, proximity, compass, | |
