The phone features a 6.3-inch notch Full HD+display with a screen Resolution of 2340 x 1080 pixels and an aspect ratio of 19.5:9. The Realme U1 is powered by aMediaTek Helio P70 with ARM G72 GPU Processor coupled with 3GB/4GB of RAM and 32GB/64GB of internal storage.
| Type | Full HD+ |
| Resolution | 2340 x 1080 pixels, 90.8 percent screen-to-body ratio |
| Pixel Density | 409 ppi |
| Screen Size | 6.3 inches, 19:9 aspect ratio |
| Processor | Octa Core 2.1 GHz, MediaTek Helio P70 with ARM G72 GPU |
| Operating System | Android 9.0, Pie, ColorOS 6.0 |
| RAM | 3 GB |
| Internal Memory | 64 GB |
| Expandable | 256 GB |
| Rear Camera | 13MP + 2MP, Camera Aperture?f/2.2 + f/2.4 |
| Front Camera | 25 MP, Sensor: SONY IMX576, Camera Aperture: f/2.0 |
| Image Stablizer | No |
| Flash | Yes, LED flash |
| Video Recording | Yes, 1080p@30fps |
| Design | Bar |
| Size | 155 x 74 x 8 mm |
| Weight | 168 grams |
| Capacity | 3500 mAh |
| Type | Non Removable |
| Radio | Yes |
| Media Player | Yes, MP3/AAC/APE/AMR/WAV/MID/OGG/FLAC/WMA |
| Video Player | Yes, AVI/3GP/MP4/WMV/MKV/MOV/ASF/FLV |
| Network | 2G, GSM: 850/900/1800/1900MHz, WCDMA: 850/900/2100MHz, FDD-LTE: Bands 1/3/5/8, TD-LTE: Bands 38/40/41 (2535-2655MHz) |
| GSM/CDMA | GSM |
| Bluetooth | 4.2, A2DP, LE |
| WiFi | Yes, Wi-Fi 802.11 a/b/g/n, WiFi Direct, hotspot |
| Internet | EDGE |
| GPS | Yes |
| USB | Micro |
| HDMI | No |
| Headphone Connector | 3.5 mm |
| SIM | Dual, Dedicated Slot |
| NFC | No |
| DLNA | No |
| Sensors | |
| Built in Applications | Yes |
| Warrenty | 1 Year |
| Dustproof | No |
| Shockproof | No |
| Water Resistant | No |
| Keypad | Touchscreen, Capacitive with multitouch |
| Water Proof | No |