| Hardware and OS | OnePlus 9 Ultra | |
| Operating system | Android v10 (Q) | |
| Processor | Octa-core (1x2.96 GHz Kryo 485 & 3x2.42 GHz Kryo 485 & 4x1.78 GHz Kryo 485) | |
| Chipset | Qualcomm Snapdragon 875 - 7 nm | |
| Internal Storage | 256 GB | |
| GPU | Adreno 650 | |
| RAM | 12 GB | |
| Camera | OnePlus 9 Ultra | other phones |
| Main camera | 108 MP 8 MP 16 MP | |
| Autofocus | Yes | |
| Camera features | Digital Zoom, Auto Flash, Face detection, Touch to focus | |
| Flash | Yes, Dual-LED Flash | |
| Front camera | 32 MP | |
| Front camera resolution | 32 MP, f/2.0, (wide) | |
| Video recording | Yes | |
| Connectivity | OnePlus 9 Ultra | other phones |
| Bluetooth | Yes, v5.0 | |
| SIM size | SIM1: Nano, SIM2: Nano | |
| Dual SIM | Dual SIM, GSM GSM | |
| GPS | Yes, with A-GPS, Glonass | |
| Network support | 5G , 4G , 3G, 2G | |
| USB connectivity | Mass storage device, USB charging | |
| WI-FI | Yes, Wi-Fi 802.11, a/ac/b/g/n/n 5GHz, MIMO | |
| Multimedia | OnePlus 9 Ultra | other phones |
| Loudspeaker | Yes | |
| Battery | OnePlus 9 Ultra | other phones |
| Capacity | 5000 mAh | |
| Type | Lithium Polymer | |
| User replaceable | No | |
| Design | OnePlus 9 Ultra | other phones |
| Colors | Silver | |
| Height | 162.6 mm | |
| Width | 75.9 mm | |
| Thickness | 8.8 mm | |
| Features | OnePlus 9 Ultra | other phones |
| Fingerprint sensor position | On-Screen | |
| Fingerprint sensor | Yes | |
| Other sensors | Accelerometer, Gyro, Proximity, Compass | |
