| Samsung Galaxy M31 | Samsung Galaxy A42 5G | |
| Specifications | ||
| Brand | Samsung | Samsung |
| Model | - | - |
| Release Date | March 2020 | November 2020 |
| Operating System | One UI (Android 10) | One UI (Android 10) |
| Dimensions | ||
| Size | 159.2 x 75.1 x 8.9 mm 6.27 x 2.96 x 0.35 in |
164.4 x 75.9 x 8.6 mm 6.47 x 2.99 x 0.34 in |
| Weight | 191 g 6.74 oz |
193 g 6.81 oz |
| Screen | ||
| Size | 6.4 inches | 6.6 inches |
| Resolution | 1,080 x 2,340 pixels | 720 x 1,600 pixels |
| PPI | 403 | 266 |
| Features | OLED | OLED |
| Cameras | ||
| Rear | 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 |
Quad camera 48 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 | 32 MP f/2.0 Wide | 20 MP f/2.2 Wide |
| Storage | ||
| Memory | 6 GB 8 GB |
4 GB 6 GB 8 GB |
| Fixed | 64 GB 128 GB |
128 GB |
| Removable | microSDXC | microSDXC |
| Processor | ||
| Chip | Samsung Exynos 9611 Octa-core processor 10 nm |
Qualcomm Snapdragon 750G 5G SM7225 Octa-core processor 8 nm |
| CPU | 4x 2.30 GHz Cortex-A73 4x 1.70 GHz Cortex-A53 |
2x 2.20 GHz Kryo 570 Gold 6x 1.80 GHz Kryo 570 Silver |
| GPU | Mali-G72 MP3 | Adreno 619 |
| Battery | ||
| Capacity | 6,000 mAh | 5,000 mAh |
| Features | Fast charging 15W | Fast charging 15W |
| Removable | ||
| Connectivity | ||
| 5G | ||
| NFC | ||
| 3.5 mm Audio Jack | ||
| Micro USB | ||
| USB Type-C | ||
| Lightning | ||