Findprix helps you compare the Oppo A55 4G (6GB RAM + 128GB) and Vivo Y31 5G in terms of price, specifications, user reviews, and more. Oppo A55 4G (6GB RAM + 128GB) is priced at ₹14,900. Vivo Y31 5G is priced at ₹14,999. Here's a quick comparison.
| Key Highlights | Oppo A55 4G (6GB RAM + 128GB) | Vivo Y31 5G |
|---|---|---|
| Processor | MediaTek Helio G35, 12 nm | Qualcomm Snapdragon 4 Gen 2 | 4 nm |
| RAM | 6 GB | 4GB | LPDDR4X |
| Storage | 128 GB, eMMC 5.1 | 128GB | eMMC 5.1 |
| Display | 6.51 inches, HD+ | 6.68 inches | HD+ |
| Front Camera | 16 MP | 8MP |
| Rear Camera | 50 MP + 2 MP + 2 MP | 50MP + 0.08MP |
| Battery | 5000 mAh, Li-Polymer | 6500 mAh | 44W |
| OS | Android v11, ColorOS | Android 15 |
Overview
| Launch Date | October 3, 2021 | September 13, 2025 |
|---|---|---|
| Processor | MediaTek Helio G35, 12 nm | Qualcomm Snapdragon 4 Gen 2 | 4 nm |
| RAM | 6 GB | 4GB | LPDDR4X |
| Storage | 128 GB, eMMC 5.1 | 128GB | eMMC 5.1 |
| Display | 6.51 inches, HD+ | 6.68 inches | HD+ |
| Front Camera | 16 MP | 8MP |
| Rear Camera | 50 MP + 2 MP + 2 MP | 50MP + 0.08MP |
| Battery | 5000 mAh, Li-Polymer | 6500 mAh | 44W |
| OS | Android v11, ColorOS | Android 15 |
Price List
 | N/A | ₹14,999 |
|---|---|---|
 | N/A | ₹14,999 |
General
| Device Type | Smartphone | Smartphone |
|---|---|---|
| Operating System | Android 11 | Android 15 |
| Custom UI | -- | Funtouch OS |
Design
| Dimensions | 163.6 x 75.7 x 8.4 mm | 166.14 x 77.01 x 8.39 mm |
|---|---|---|
| Weight | 193 g | 209 g |
| Water Resistance | Yes, Splash proof, IPX4 | Yes, IP68, IP69 (up to 1.5m for 30 min) |
| Dust Resistance | -- | Yes |
| Build Material | -- | Back: Plastic |
| Colours | Starry Black, Rainbow Blue | Rose Red, Diamond Green |
| Features | -- | MIL-STD-810H certified |
Display
| Touch Screen | Yes, Capacitive Touchscreen, Multi-touch | Yes |
|---|---|---|
| Display Type | IPS LCD | LCD |
| Peak Brightness | 480 nits | 1000 nits |
| Refresh Rate | 60 Hz | 120 Hz |
| Screen Size | 6.51 inches | 6.68 inches (16.97 cm), HD+ |
| Screen Resolution | 720 x 1600 pixels | 720 x 1608 pixels |
| Aspect Ratio | 20:9 | 20:9 |
| Screen-to-Body Ratio | -- | ~84.0% |
| Pixel Density | 270 ppi | ~264 ppi |
| Screen Protection | Yes | Yes, Guardian Glass |
Rear Camera
| Camera Setup | Triple | Dual |
|---|---|---|
| Primary | 50 MP (wide) f/1.8 aperture | 50 MP (wide) f/1.8 aperture PDAF |
| Secondary | 2 MP (macro) f/2.4 aperture | 0.08 MP f/3.0 aperture |
| Tertiary | 2 MP (mono) f/2.4 aperture | -- |
| OIS | -- | No |
| Autofocus | Yes | Yes |
| Flash | Yes, LED Flash | Yes, LED + Aura Light |
| Video Recording | 1080p @ 30 fps | 1080p @ 30 fps |
| Features | Digital Zoom, Auto Flash, Face detection, Touch to focus, Autofocus | -- |
Front Camera
| Camera Setup | Single | Single |
|---|---|---|
| Primary | 16 MP (wide) f/2.4 aperture | 8 MP (wide) f/2.0 aperture |
| Video Recording | 1080p @ 30 fps | 1080p @ 30 fps |
Performance
| RAM | 6 GB | 4 GB |
|---|---|---|
| RAM Type | -- | LPDDR4X |
| Chipset | MediaTek Helio G35 | Qualcomm Snapdragon 4 Gen 2 |
| Fabrication | 12 nm | 4 nm |
| GPU | PowerVR GE8320 | Adreno 613 |
| CPU | Octa core (8 x 2.3 GHz Cortex A53) | Octa core 2x Cortex A78 @ 2.2 GHz 6x Cortex A55 @ 1.95 GHz |
Storage
| Internal Storage | 128 GB | 128 GB |
|---|---|---|
| Storage Type | eMMC 5.1 | eMMC 5.1 |
| Memory Card Slot | Yes, Up to 256 GB | Yes, up to 2 TB |
Battery
| Battery | 5000 mAh | 6500 mAh |
|---|---|---|
| Battery Type | Li-Polymer | Li-ion |
| Wired Charging Speed | 18W | 44W |
| Wired Charging Time | -- | 50% charge in ~38 minutes |
| Wired Reverse Charging | -- | Yes |
Network
| SIM | Dual SIM (Nano + Nano) | SIM 1: Nano SIM 2: Nano (Hybrid slot) |
|---|---|---|
| Network Support | 4G, 3G, 2G | 5G, 4G, 3G, 2G |
| 5G Bands | -- | n1, n3, n5, n8, n28, n40, n77, n78 |
| 4G Bands | -- | B1, B3, B5, B8, B28, B38, B40, B41 |
| Navigation Support | Yes with A-GPS, Glonass | GPS, Glonass, Beidou, Galileo, QZSS |
| SAR | -- | Head: 1.130 W/kg Body: 0.986 W/kg |
Connectivity
| Bluetooth | Yes, v5.0 | Yes, v4.2 |
|---|---|---|
| Wi-Fi | Yes, Wi-Fi 5 (802.11 a/b/g/n/ac) 5GHz | Yes, Wi-Fi 5 (802.11 a/b/g/n/ac) 5GHz |
| USB | USB Type-C, USB On-The-Go | USB Type-C 2.0, OTG |
| NFC | No | No |
Features
| Audio Jack | Yes, 3.5 mm | Yes, USB Type-C |
|---|---|---|
| Loud Speaker | Yes | Yes |
| Stereo Speakers | -- | Yes |
| Fingerprint Sensor | Yes, Side | Yes, Side |
| Sensors | Light sensor, Proximity sensor, Accelerometer | Accelerometer, Compass, Light Sensor, Proximity Sensor |
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