Oppo A31 vs Samsung Galaxy M12
| Type | Touch | Touch |
| Dimensions | 131.90 x 65.54 x 8.03 mm | 164.00 x 75.90 x 9.70 mm |
| Weight | 135.00 g | 221.00 g |
| Display size | 4.50" | 6.50" |
| Display | Color / IPS TFT 16M colors 480 x 854 px (4.50") 218 ppi | Color / PLS TFT 16M colors 60 Hz 720 x 1600 px (6.50") 270 ppi |
| Display protection | ||
| Additional display | ||
| Protection of the secondary display | ||
| Talk time (max.) | 4G: 3480 min. (58.0 h) | |
| Playback time (max.) | nd | Audio: 110 h (4.6 days) Video: 23 h (1.0 days) |
| Internet browsing time (max.) | nd | 4G: 24 h (1.0 days) |
| Standard battery | Li-Ion 2000 mAhBuy powerbank
| Li-Ion 6000 mAhBuy powerbank
|
| Quick battery charging | Fast Charging | |
| Wireless battery charging | ||
| Internal memory | 8 GB | 32 GB, 64 GB, 128 GB |
| End-user memory | UNKNOWN, 48.4 GB | |
| RAM memory | 1 GB | 3 GB, 4 GB, 6 GB |
| Memory cards | microSD, microSDHC, microSDXC up to 128 GBBuy memory card | microSD, microSDHC, microSDXC up to 1000 GBBuy memory card |
| Operating system | Android 4.4 KitKat | Android 11 |
| Interface | ColorOS 2.0.1 | One UI 3.0 |
| Processor | Qualcomm Snapdragon 410 8916 | Samsung Exynos 850 |
| Processor clock | 1200 MHz | 2000 MHz |
| GPU | Adreno 306 | - |
| Touchscreen | ||
| DualSIM | ||
| SIM cards standard | DualSIM(microSIM, nanoSIM) | SingleSIM(nanoSIM) |
| Hybrid DualSIM | nd | |
| Announced | 2Q 2015 | 1Q 2021 |
| Other names | A31t | SM-M127F |
| GSM frequencies | 850 900 1800 1900 | 850 900 1800 1900 |
| UMTS | 850 900 1700 1900 2100 | |
| LTE standard | TDD LTE: 2600, 2500, 2300, 1900 | FDD LTE: 2600, 2100, 1900, 1800, 1700, 900, 850, 800, 700 TDD LTE: 2600, 2500, 2300 |
| Standard 5G | ||
| CDMA | ||
| Standard TD-SCDMA | 1900 2000 | |
| UMA |

