Oppo A78 4G has better RAM than Oppo A31 2020 (6GB RAM + 128GB). In terms of display resolution, Oppo A78 4G has better resolution of 2400 x 1080 than Oppo A31 2020 (6GB RAM + 128GB) which has resolution of 1600 x 720. Both have the same amount of internal memory.
| Name | Oppo A78 4G | Oppo A31 2020 (6GB RAM + 128GB) |
| RAM | 8 GB | 6 GB |
|---|---|---|
| Display | 6.43 in | 6.5 in |
| Internal Memory | 128 GB | 128 GB |
| Battery | 5000 mAh | 4230 mAh |
| Camera | 50 MP + 2 MP Dual | 12 MP + 2 MP + 2 MP Triple |
| Price | Rs. 16924 | Rs. 15990 |
The launch Date of the first phone is July 10, 2023. The cost of Oppo A78 4G is Rs. 16924. The launch Date of the second phone is March 6, 2020. The cost of Oppo A31 2020 (6GB RAM + 128GB) is Rs. 15990.
Oppo A31 2020 (6GB RAM + 128GB) has larger screen size of 6.5 inches in comparison to Oppo A78 4G's 6.43 inch screen. Oppo A78 4G has AMOLED Screen type where as Oppo A31 2020 (6GB RAM + 128GB) has IPS LCD Screen type. Oppo A78 4G has display density of 409 PPI & Oppo A31 2020 (6GB RAM + 128GB) has only 270 PPI display density. In terms of screen to body ratio, Oppo A78 4G has better screen to body ratio of ~ 90.8% than Oppo A31 2020 (6GB RAM + 128GB)'s ~ 89%. Both phones have same aspect ratio of 20:9.
Oppo A78 4G's larger 8 GB RAM is better for playing games and all with respect to Oppo A31 2020 (6GB RAM + 128GB)'s lower 6 GB RAM. and both have same Internal Memory of 128 GB.
Oppo A78 4G's 50 MP + 2 MP Dual Rear Camera outshines Oppo A31 2020 (6GB RAM + 128GB)'s 12 MP + 2 MP + 2 MP Triple Rear Camera in terms of resolution. Both of them stand equal in terms of Front Camera Resolution as both have 8 MP Front Camera.
Both the phones has Android Operating System but the first one runs on version 13 and the second one on v9.0 (Pie) version.
| Name | Oppo A78 4G | Oppo A31 2020 (6GB RAM + 128GB) |
| General | ||
| Model | A78 4G | A31 2020 |
| Sim Type | Dual Sim, GSM+GSM | Dual Sim, GSM+GSM |
| Dual Sim | Yes | Yes |
| Sim Size | Nano SIM | Nano+Nano SIM |
| Device Type | Smartphone | Smartphone |
| Release Date | July 10, 2023 | March 6, 2020 |
| Design | ||
| Dimensions | 73.2 x 160 x 7.9 mm | 75.5 x 163.9 x 8.3 mm |
| Weight | 180 g | 180 g |
| Colors | Mist Black , Aqua Green | |
| Display | ||
| Type | Color AMOLED Screen (16.7 M) | Color IPS LCD Screen |
| Touch | Yes | Yes |
| Size | 6.43 inches, 1080 x 2400 pixels, 90 Hz | 6.5 inches, 720 x 1600 pixels |
| Aspect Ratio | 20:9 | 20:9 |
| PPI | ~ 409 PPI | ~ 270 PPI |
| Screen to Body Ratio | ~ 90.8% | ~ 89% |
| Glass Type | Corning Gorilla Glass 5 | |
| Features | 100% DCI-P3, 600nits (Typical), 430nits (Typical) | |
| Notch | Yes, Punch Hole | Yes, Water Drop Notch |
| Memory | ||
| RAM | 8 GB | 6 GB |
| Expandable RAM | Upto 8 GB Extra Virtual RAM | |
| Storage | 128 GB | 128 GB |
| Storage Type | UFS 2.2 | |
| Card Slot | Yes, upto 1 TB | Yes, upto 256 GB |
| Connectivity | ||
| GPRS | Yes | Yes |
| EDGE | Yes | Yes |
| 3G | Yes | Yes |
| 4G | Yes | Yes |
| VoLTE | Yes | Yes |
| Wifi | Yes, with wifi-hotspot | Yes, with wifi-hotspot |
| Wifi Version | Wi-Fi 5 (802.11ac) | |
| Bluetooth | Yes, v5.0, A2DP, LE, aptX HD | Yes, v5.0 |
| USB | Yes, USB-C v2.0 | Yes, microUSB v2.0 |
| USB Features | USB on-the-go, USB Charging | USB Charging |
| Extra | ||
| GPS | Yes, with A-GPS, GLONASS, GALILEO, BDS | yes with A-GPS |
| Fingerprint Sensor | Yes, In Display | Yes, Rear |
| Face Unlock | Yes | Yes |
| Sensors | accelerometer, gyro, proximity, compass | Light sensor, Proximity sensor, Accelerometer |
| 3.5mm Headphone Jack | Yes | Yes |
| NFC | Yes, Yes (market/region dependent) | |
| IP Rating | IP54 | |
| Dust Resistant | Yes | |
| Extra Features | Dual Stereo Speakers, LPDDR4x RAM | |
| Camera | ||
| Rear Camera | 50 MP ƒ/1.8 (Wide Angle) PDAF 2 MP ƒ/2.4 (Depth Sensor) | 12 MP ƒ/1.8 (Main) 2 MP ƒ/2.4 (Macro) Macro 2 MP ƒ/2.4 (Depth Sensor) |
| Auto Focus | Yes | Yes |
| Features | Photos, videos, night, expert, panoramic, portrait, time-lapse, slow-motion, super text, Google lens, extra HD, multi-scene recording, and cute | Digital Zoom, Auto Flash, Face detection, Touch to focus |
| Video Recording | 1080p @ 30 fps FHD | 1080p @ 30 fps FHD |
| Flash | Yes, LED | Yes, LED |
| Front Camera | 8 MP ƒ/2 (Wide Angle) Punch Hole, Screen Flash | 8 MP ƒ/2 (Main) |
| Front Video Recording | 1080p @ 30 fps FHD | 1080p @ 30 fps FHD |
| Technical | ||
| OS | Android v13 | Android v9.0 (Pie) |
| Custom UI | ColorOS 13.1 | |
| Chipset | Qualcomm Snapdragon 680 | MediaTek Helio P35 |
| CPU | 2.4 GHz, Octa Core Processor | 2.3 GHz, Octa Core Processor |
| Core Details | 4x2.4 GHz Kryo 265 Gold & 4x1.9 GHz Kryo 265 Silver | 4x2.3 GHz Cortex-A53 & 4x1.8 GHz Cortex-A53 |
| GPU | Adreno 610 | PowerVR GE8320 |
| Java | No | No |
| Browser | Yes | Yes |
| Multimedia | ||
| Yes | Yes | |
| Music | Yes | Yes |
| Video | Yes | Yes |
| FM Radio | No | Yes |
| Document Reader | Yes | Yes |
| Battery | ||
| Type | Non-Removable Battery | Non-Removable Battery |
| Size | 5000 mAh, Li-Po Battery | 4230 mAh, Li-ion Battery |
| Fast Charging | Yes, 67W Fast Charging | |