Oppo A3 Pro 5G (8GB RAM + 256GB) has better RAM than Oppo A31 (2020). In terms of display resolution, Oppo A3 Pro 5G (8GB RAM + 256GB) has better resolution of 1604 x 720 than Oppo A31 (2020) which has resolution of 1600 x 720. Oppo A3 Pro 5G (8GB RAM + 256GB) has more internal memory than Oppo A31 (2020)
| Name | Oppo A3 Pro 5G (8GB RAM + 256GB) | Oppo A31 (2020) | 
| RAM | 8 GB | 4 GB | 
|---|---|---|
| Display | 6.67 in | 6.5 in | 
| Internal Memory | 256 GB | 64 GB | 
| Battery | 5100 mAh | 4230 mAh | 
| Camera | 50 MP + 2 MP Dual | 12 MP + 2 MP + 2 MP Triple | 
| Price | Rs. 18999 | Rs. 8999 | 
The launch Date of the first phone is June 21, 2024. The cost of Oppo A3 Pro 5G (8GB RAM + 256GB) is Rs. 18999. The launch Date of the second phone is March 6, 2020. The cost of Oppo A31 (2020) is Rs. 8999.
Oppo A3 Pro 5G (8GB RAM + 256GB) has larger screen size of 6.67 inches in comparison to Oppo A31 (2020)'s 6.5 inch screen. Oppo A3 Pro 5G (8GB RAM + 256GB) has LCD Screen type where as Oppo A31 (2020) has IPS LCD Screen type. Oppo A31 (2020) has display density of 270 PPI & Oppo A3 Pro 5G (8GB RAM + 256GB) has only 264 PPI display density. In terms of screen to body ratio, Oppo A3 Pro 5G (8GB RAM + 256GB) has better screen to body ratio of ~ 89.9% than Oppo A31 (2020)'s ~ 89%.
Oppo A3 Pro 5G (8GB RAM + 256GB)'s larger 8 GB RAM is better for playing games and all with respect to Oppo A31 (2020)'s lower 4 GB RAM. Oppo A3 Pro 5G (8GB RAM + 256GB) has more Internal Memory (256 GB) than Oppo A31 (2020) (64 GB).
Oppo A3 Pro 5G (8GB RAM + 256GB)'s 50 MP + 2 MP Dual Rear Camera outclasses Oppo A31 (2020)'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 14 and the second one on v9.0 (Pie) version.
| Name | Oppo A3 Pro 5G (8GB RAM + 256GB) | Oppo A31 (2020) | 
| General | ||
| Model | A3 Pro | A31 2020 | 
| Sim Type | Dual Sim, GSM+GSM | Dual Sim, GSM+GSM | 
| Dual Sim | Yes | Yes | 
| Sim Size | Nano+Nano SIM | Nano+Nano SIM | 
| Device Type | Smartphone | Smartphone | 
| Release Date | June 21, 2024 | March 6, 2020 | 
| In The Box | Phone x 1, USB Data Cable x 1, Charger x 1, SIM Ejector Tool x 1, Protective Case x 1, User manual x 1, Warranty card x 1 | |
| Design | ||
| Dimensions | 76.14 x 165.79 x 7.68 mm | 75.5 x 163.9 x 8.3 mm | 
| Weight | 186 g | 180 g | 
| Bezel less | No | |
| Colors | Starry Black, Moonlight Purple | |
| Display | ||
| Type | Color LCD Screen (16.7 M) | Color IPS LCD Screen | 
| Touch | Yes | Yes | 
| Size | 6.67 inches, 720 x 1604 pixels, 120 Hz | 6.5 inches, 720 x 1600 pixels | 
| Aspect Ratio | 20:9 | |
| PPI | ~ 264 PPI | ~ 270 PPI | 
| Screen to Body Ratio | ~ 89.9% | ~ 89% | 
| Features | 1000nits, Vivid Mode: 83% NTSC, Natural Mode: 71% NTSC | |
| Notch | Yes, Punch Hole | Yes, Water Drop Notch | 
| Memory | ||
| RAM | 8 GB | 4 GB | 
| Expandable RAM | Upto 8 GB Extra Virtual RAM | |
| Storage | 256 GB | 64 GB | 
| Storage Type | UFS 2.2 | |
| Card Slot | Yes | Yes, upto 256 GB | 
| Connectivity | ||
| GPRS | Yes | Yes | 
| EDGE | Yes | Yes | 
| 3G | Yes | Yes | 
| 4G | Yes | Yes | 
| 5G | Yes | |
| 5G Bands | n1/n3/n5/n8/n28B/n40/n41/n77/n78 | |
| VoLTE | Yes, Dual Stand-By | Yes | 
| Wifi | Yes, with wifi-hotspot | Yes, with wifi-hotspot | 
| Wifi Version | Wi-Fi 5 (802.11ac), 802.11a/b/g/n, WLAN 2.4G/WLAN 5G, WLAN Display; WLAN network sharing; 1 x 1 SISO | |
| Bluetooth | Yes, v5.3, Support SBC, AAC, aptX, aptX HD, and LDAC | 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, BeiDou: B1I; GPS: L1; GLONASS: G1; Galileo: E1; QZSS: L1 | yes with A-GPS | 
| Fingerprint Sensor | Yes, In Display | Yes, Rear | 
| Face Unlock | Yes | Yes | 
| Sensors | Geomagnetic Sensor, Proximity Sensor, Light Sensor, Acceleration Sensor, Gravity Sensor | Light sensor, Proximity sensor, Accelerometer | 
| 3.5mm Headphone Jack | Yes | Yes | 
| Splash Resistant | No | |
| IP Rating | IP54 | |
| Dust Resistant | Yes | |
| Extra Features | LPDDR4X@2133MHz, 2 × 16 bits RAM | |
| Camera | ||
| Rear Camera | 50 MP ƒ/1.7 (Wide Angle) FOV 76°; 5P lens; AF 2 MP (Depth Sensor) FOV 89°; 3P lens; FF  | 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 | Photo, Video, Night, Pro, Pano, Portrait, Time-lapse, Slo-mo, Text Scanner, Google Lens, HI-RES, Dual-view Video, and Sticker | Digital Zoom, Auto Flash, Face detection, Touch to focus | 
| Video Recording | 1080p @ 30/60 fps FHD | 1080p @ 30 fps FHD | 
| Flash | Yes, LED | Yes, LED | 
| Front Camera | 8 MP (Wide Angle) Punch Hole  | 8 MP ƒ/2 (Main) | 
| Front Video Recording | 1080p @ 30 fps FHD | 1080p @ 30 fps FHD | 
| Technical | ||
| OS | Android v14 | Android v9.0 (Pie) | 
| Custom UI | ColorOS 14.0.1 | |
| Chipset | Mediatek Dimensity 6300 | MediaTek Helio P35 | 
| CPU | 2.4 GHz, Octa Core Processor | 2.3 GHz, Octa Core Processor | 
| Core Details | 2X Arm Cortex-A76@2.4GHz & 6X Arm Cortex-A55@2.0GHz | 4x2.3 GHz Cortex-A53 & 4x1.8 GHz Cortex-A53 | 
| GPU | Arm Mali-G57 MC2 | 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 | 5100 mAh, Li-Po Battery | 4230 mAh, Li-ion Battery | 
| Fast Charging | Yes, 45W SUPERVOOC Charging | |