Oppo A78 4G vs Oppo F31 5G (8GB RAM + 256GB)
Quick Comparison
Both Oppo A78 4G and Oppo F31 5G (8GB RAM + 256GB) comes with same RAM. In terms of display resolution, Oppo F31 5G (8GB RAM + 256GB) has better resolution of 2412 x 1080 than Oppo A78 4G which has resolution of 2400 x 1080. Oppo F31 5G (8GB RAM + 256GB) has more internal memory than Oppo A78 4G
| Name | Oppo A78 4G | Oppo F31 5G (8GB RAM + 256GB) |
| RAM | 8 GB | 8 GB |
|---|---|---|
| Display | 6.43 in | 6.57 in |
| Internal Memory | 128 GB | 256 GB |
| Battery | 5000 mAh | 7000 mAh |
| Camera | 50 MP + 2 MP Dual | 50 MP + 2 MP Dual |
| Price | Rs. 13994 | Rs. 28999 |
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Detailed Comparison
Price And Launch
The launch Date of the first phone is July 10, 2023. The cost of Oppo A78 4G is Rs. 13994. The launch Date of the second phone is September 15, 2025. The cost of Oppo F31 5G (8GB RAM + 256GB) is Rs. 28999.
Display comparison
Oppo F31 5G (8GB RAM + 256GB) has larger screen size of 6.57 inches in comparison to Oppo A78 4G's 6.43 inch screen. Both the phones have AMOLED Screen Type. Oppo A78 4G has display density of 409 PPI & Oppo F31 5G (8GB RAM + 256GB) has only 402 PPI display density. In terms of screen to body ratio, Oppo F31 5G (8GB RAM + 256GB) has better screen to body ratio of ~ 92.2% than Oppo A78 4G's ~ 90.8%. Both mobiles have same aspect ratio of 20:9.
Memory comparison
Both mobiles come with 8 GB RAM Oppo F31 5G (8GB RAM + 256GB) has more Internal Memory (256 GB) than Oppo A78 4G (128 GB).
Camera comparison
Oppo A78 4G has 50 MP + 2 MP Dual Rear Camera in comparison to Oppo F31 5G (8GB RAM + 256GB)'s 50 MP + 2 MP Dual Rear Camera. Oppo F31 5G (8GB RAM + 256GB) will be better choice if you're looking to click lot of selfies as it has better 16 MP Front Camera in comparison to Oppo A78 4G's 8 MP Front Camera.
Technical comparison
Both the phones has Android Operating System but the first one runs on version 13 and the second one on 15 version.
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Full Comparison
| Name | Oppo A78 4G | Oppo F31 5G (8GB RAM + 256GB) |
| General | ||
| Country of Origin | India | |
| Model | A78 4G | CPH2781 |
| Sim Type | Dual Sim, GSM+GSM | Dual Sim, GSM+GSM (Hybrid Slot) |
| Dual Sim | Yes | Yes |
| Sim Size | Nano SIM | Nano+Nano SIM |
| Device Type | Smartphone | Smartphone |
| Release Date | July 10, 2023 | September 15, 2025 |
| In The Box | Handset, Charger, USB Data Cable, Sim Ejector Tool, Quick Guide, Protective Case | |
| Design | ||
| Dimensions | 73.2 x 160 x 7.9 mm | |
| Weight | 180 g | |
| Colors | Mist Black , Aqua Green | |
| Display | ||
| Type | Color AMOLED Screen (16.7 M) | Color AMOLED Screen (16M Colors) |
| Touch | Yes | Yes, 360 Hz Touch Sampling Rate |
| Size | 6.43 inches, 1080 x 2400 pixels, 90 Hz | 6.57 inches, 1080 x 2412 pixels, 120 Hz |
| Aspect Ratio | 20:9 | 20:9 |
| PPI | ~ 409 PPI | ~ 402 PPI |
| Screen to Body Ratio | ~ 90.8% | ~ 92.2% |
| Glass Type | Corning Gorilla Glass 5 | AGC DT-Star D+ |
| Features | 100% DCI-P3, 600nits (Typical), 430nits (Typical) | |
| Notch | Yes, Punch Hole | Yes, Punch Hole |
| Memory | ||
| RAM | 8 GB | 8 GB |
| Expandable RAM | Upto 8 GB Extra Virtual RAM | Upto 8 GB Extra Virtual RAM |
| Storage | 128 GB | 256 GB |
| Storage Type | UFS 2.2 | UFS 2.2 |
| Card Slot | Yes, upto 1 TB | Yes, (Hybrid Slot) |
| Connectivity | ||
| GPRS | Yes | Yes |
| EDGE | Yes | Yes |
| 3G | Yes | Yes |
| 4G | Yes | Yes |
| 5G | Yes | |
| 5G Bands | n1/n3/n5/n7/n8/n20/n28A/n28B/n66/n38/n40/n41/n77/n78 | |
| VoLTE | Yes | Yes, Dual Stand-By |
| Wifi | Yes, with wifi-hotspot | Yes, with wifi-hotspot |
| Wifi Version | Wi-Fi 5 (802.11ac) | 802.11 a/b/g/n/ac, Wi-Fi 5 (802.11 ac), 802.11 a/b/g/n, WLAN (2.4 GHz | 5 GHz), WLAN Display, WLAN Tethering, 1 x 1 SOSO |
| Bluetooth | Yes, v5.0, A2DP, LE, aptX HD | Yes, v5.4, Support SBC, AAC, aptX, aptX HD, LDAC, LHDC |
| USB | Yes, USB-C v2.0 | Yes, USB-C v2.0 |
| USB Features | USB on-the-go, USB Charging | USB on-the-go, USB Charging |
| IR Blaster | Yes | |
| Extra | ||
| GPS | Yes, with A-GPS, GLONASS, GALILEO, BDS | Yes, with A-GPS, GLONASS, BDS, GALILEO, QZSS |
| Fingerprint Sensor | Yes, In Display | Yes, Side |
| Face Unlock | Yes | Yes |
| Sensors | accelerometer, gyro, proximity, compass | Geomagnetic Induction, Ambient Light Induction, Proximity Sensor, Acceleration Sensor, Gravity Sensor, Gyroscope, Infrared Sensor, Step Recording Function, Facial Recognition Sensor |
| 3.5mm Headphone Jack | Yes | No |
| NFC | Yes, Yes (market/region dependent) | |
| AI Features | Smart Document (AI summaries, translations, rewriting), Smart Note (AI-enhanced note-taking), and high-quality scanning. Integrated Google Gemini delivers multimodal AI intelligence | |
| Water Resistance | Yes | |
| IP Rating | IP54 | IP69+IP68+IP66 |
| Dust Resistant | Yes | Yes |
| Extra Features | Dual Stereo Speakers, LPDDR4x RAM | 4300 mm² VC cooling system |
| Camera | ||
| Rear Camera | 50 MP ƒ/1.8 (Wide Angle) PDAF 2 MP ƒ/2.4 (Depth Sensor) | 50 MP ƒ/1.8 (Wide Angle) Sensor: OV50D40, Sensor size: 1/2.88″, Single pixel size: 0.612 um, Aperture size: f/1.8, Focal length: 27 mm, Lens configuration: 5P, Supporting AF 2 MP Sensor: GC02M1-C24YK, Sensor size: 1/5″, Single pixel size: 1.75 um, Aperture size: f/2.4, Focal length: 22 mm, Lens configuration: 3P |
| 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 | |
| Video Recording | 1080p @ 30 fps FHD | 1080p @ 30 fps FHD, 720p |
| Flash | Yes, LED | Yes, LED |
| Front Camera | 8 MP ƒ/2 (Wide Angle) Punch Hole, Screen Flash | 16 MP (Wide Angle) Sensor size: 1/3.09″, Single pixel size: 1.0 um, Aperture size: f/2.4, Focal length: 23 mm, Lens configuration: 4P Punch Hole |
| Front Video Recording | 1080p @ 30 fps FHD | 1080p @ 30 fps FHD |
| Technical | ||
| OS | Android v13 | Android v15 |
| Custom UI | ColorOS 13.1 | ColorOS 15 |
| Chipset | Qualcomm Snapdragon 680 | Mediatek Dimensity 6300 |
| CPU | 2.4 GHz, Octa Core Processor | 2.4 GHz, Octa Core Processor |
| Core Details | 4x2.4 GHz Kryo 265 Gold & 4x1.9 GHz Kryo 265 Silver | 2X Arm Cortex-A76@2.4GHz & 6X Arm Cortex-A55@2.0GHz |
| GPU | Adreno 610 | Arm Mali-G57 MC2 |
| Java | No | No |
| Browser | Yes | Yes |
| Multimedia | ||
| Yes | Yes | |
| Music | Yes | Yes |
| Video | Yes | Yes |
| FM Radio | No | No |
| Document Reader | Yes | Yes |
| Battery | ||
| Type | Non-Removable Battery | Non-Removable Battery |
| Size | 5000 mAh, Li-Po Battery | 7000 mAh |
| Fast Charging | Yes, 67W Fast Charging | Yes, 80W SUPERVOOC Charging |
| Reverse Charging | Yes | |