| OnePlus 7 | Samsung Galaxy M31 | |
| Specifications | ||
| Brand | OnePlus | Samsung |
| Model | - | - |
| Release Date | June 2019 | March 2020 |
| Operating System | OxygenOS (Android 9.0) | One UI (Android 10) |
| Dimensions | ||
| Size | 157.7 x 74.8 x 8.2 mm 6.21 x 2.94 x 0.32 in |
159.2 x 75.1 x 8.9 mm 6.27 x 2.96 x 0.35 in |
| Weight | 182 g 6.42 oz |
191 g 6.74 oz |
| Screen | ||
| Size | 6.41 inches | 6.4 inches |
| Resolution | 1,080 x 2,340 pixels | 1,080 x 2,340 pixels |
| PPI | 402 | 403 |
| Features | OLED | OLED |
| Cameras | ||
| Rear | Dual camera 48 MP f/1.7 Wide 5 MP f/2.4 Depth |
Quad camera 64 MP f/1.8 Wide 8 MP f/2.2 Ultra Wide 5 MP f/2.4 Macro 5 MP f/2.4 Depth |
| Front | 16 MP f/2.0 Wide | 32 MP f/2.0 Wide |
| Storage | ||
| Memory | 6 GB 8 GB 12 GB |
6 GB 8 GB |
| Fixed | 128 GB 256 GB |
64 GB 128 GB |
| Removable | - | microSDXC |
| Processor | ||
| Chip | Qualcomm Snapdragon 855 SM8150 Octa-core processor 7 nm |
Samsung Exynos 9611 Octa-core processor 10 nm |
| CPU | 1x 2.84 GHz Kryo 485 Prime 3x 2.42 GHz Kryo 485 Gold 4x 1.78 GHz Kryo 485 Silver |
4x 2.30 GHz Cortex-A73 4x 1.70 GHz Cortex-A53 |
| GPU | Adreno 640 | Mali-G72 MP3 |
| Battery | ||
| Capacity | 3,700 mAh | 6,000 mAh |
| Features | Fast charging 20W | Fast charging 15W |
| Removable | ||
| Connectivity | ||
| 5G | ||
| NFC | ||
| 3.5 mm Audio Jack | ||
| Micro USB | ||
| USB Type-C | ||
| Lightning | ||