OPPO K12x vs Redmi 15A 5G
The short answer
- Redmi 15A 5G has the bigger battery: 6,300 mAh against 5,100.
- OPPO K12x charges faster, at 45 W against 15.
Compared only on figures both makers publish. Everything else is in the table below.
2 phones side by side.
| Specification |
 OPPO K12x
₹12,999launch price
|
 Redmi 15A 5G
₹12,999launch price · Mar 2026
|
|---|---|---|
| Placement | ||
| At its price | Older listing | Bottom quarter ₹10–15k |
| Spec index | — | 7.0 / 10 |
| Key Specs | ||
| RAM | 6 GB / 8 GB | 4 GB / 6 GB |
| Processor | MediaTek Dimensity 6300 | Unisoc T8300 |
| Rear Camera | 32 MP + 2 MP | 32 MP |
| Front Camera | 8 MP | 8 MP |
| Battery | 5100 mAh | 6300 mAh |
| Display | 6.67 inches (16.94 cm) | 6.9 inches (17.53 cm) |
| General | ||
| Launch Date | August 2, 2024 (Official) | March 27, 2026 (Official) |
| Operating System | Android v14 | Android v16 |
| Custom UI | ColorOS | Xiaomi HyperOS 3 |
| Performance | ||
| Chipset | MediaTek Dimensity 6300 | Unisoc T8300 |
| CPU | Octa core (2.4 GHz, Dual core, Cortex A76 + 2 GHz, Hexa Core, Cortex A55) | Octa core (2.2 GHz, Dual core, Cortex A78 + 2 GHz, Hexa Core, Cortex A55) |
| Architecture | 64 bit | 64 bit |
| Fabrication | 6 nm | 6 nm |
| Graphics | Mali-G57 MC2 | Arm Mali-G57 MC2 |
| RAM | 6 GB / 8 GB | 4 GB / 6 GB |
| RAM Type | LPDDR4X | LPDDR4X |
| Display | ||
| Display Type | LCD | IPS LCD |
| Screen Size | 6.67 inches (16.94 cm) | 6.9 inches (17.53 cm) |
| Resolution | 720x1604 px (HD+) | 720x1600 px (HD+) |
| Aspect Ratio | 20:9 | 20:9 |
| Pixel Density | 264 ppi | 254 ppi |
| Screen to Body Ratio (calculated) | 85.29 % | — |
| Screen Protection | Yes | — |
| Bezel-less display | Yes with punch-hole display | Yes with waterdrop notch |
| Touch Screen | Yes, Capacitive Touchscreen, Multi-touch | Yes, Capacitive Touchscreen, Multi-touch |
| Brightness | 1000 nits | 800 nits (peak) |
| Refresh Rate | 120 Hz | 120 Hz |
| Design | ||
| Height | 165.7 mm | 171.56 mm |
| Width | 76 mm | 79.47 mm |
| Thickness | 7.7 mm | 8.15 mm |
| Weight | 186 grams | 210 grams |
| Colours | Midnight Violet, Breeze Blue | Awesome Blue, Amaze Purple, Ace Black |
| Waterproof | Yes, Splash proof, IP54 | Yes, IP52 (dust and splash resistant) |
| Ruggedness | Dust proof | — |
| Main Camera | ||
| Camera Setup | Dual | Dual |
| Resolution | 32 MP f/1.8, Wide Angle (76° field-of-view), Primary Camera (27 mm focal length, 3.1" sensor size, 0.7µm pixel size) 2 MP f/2.4, Depth Camera (22 mm focal length, 5.0" sensor size, 1.75µm pixel size) | 32 MP f/2.0, Wide Angle, Primary Camera (1.12 µm pixel size) Auxiliary Lens |
| Autofocus | Yes | — |
| OIS | No | No |
| Flash | Yes, LED Flash | Yes, LED Flash |
| Image Resolution | 6500 x 4920 Pixels | — |
| Settings | Exposure compensation, ISO control | — |
| Shooting Modes | Continuous Shooting High Dynamic Range mode (HDR) | — |
| Camera Features | Digital Zoom Auto Flash Face detection Touch to focus | AI Scene Builder AI scene recognition |
| Video Recording | 1920x1080 @ 30 fps 1280x720 @ 30 fps | — |
| Video Recording Features | Dual Video Recording | — |
| Front Camera | ||
| Camera Setup | Single | Single |
| Resolution | 8 MP f/2.0, Wide Angle, Primary Camera (25 mm focal length, 4.0" sensor size, 1.12µm pixel size) | 8 MP f/2.0, Wide Angle, Primary Camera |
| Video Recording | 1920x1080 @ 30 fps 1280x720 @ 30 fps | — |
| Autofocus | — | No |
| Flash | — | No |
| Camera Features | — | AI Beauty Selfie |
| Battery | ||
| Capacity | 5100 mAh | 6300 mAh |
| Removable | No | No |
| Wireless Charging | No | No |
| Quick Charging | Yes, Super VOOC, 45W: 50 % in 30 minutes | Yes, Fast, 15W |
| USB Type-C | Yes | Yes |
| Storage | ||
| Internal Memory | 128 GB / 256 GB | 64 GB / 128 GB |
| Expandable Memory | Yes, Up to 1 TB | Yes, microSD, Up to 2 TB |
| USB OTG | Yes | Yes |
| Storage Type | UFS 2.2 | UFS 2.2 |
| Network & Connectivity | ||
| SIM Slot(s) | Dual SIM, GSM+GSM | Dual SIM, GSM+GSM (Nano SIM + Nano SIM) |
| SIM Size | SIM1: Nano, SIM2: Nano (Hybrid) | SIM1: Nano, SIM2: Nano |
| Network Support | 5G Supported in India, 4G Supported in India, 3G, 2G | 5G Supported in India, 4G Supported in India, 3G, 2G |
| VoLTE | Yes | Yes |
| SIM 1 | - | - |
| 5G Bands | FDD N1 / N3 / N5 / N8 / N28 TDD N40 / N41 / N77 / N78 | SA / NSA N1 / N3 / N5 / N8 / N28 / N40 / N41 / N78 |
| 4G Bands | TD-LTE 2300(band 40) / 2500(band 41) FD-LTE 2100(band 1) / 1800(band 3) / 900(band 8) / 700(band 28) / 850(band 5) | FD-LTE 2100(band 1) / 1800(band 3) / 850(band 5) / 900(band 8) / 700(band 28) TD-LTE 2300(band 40) / 2500(band 41) |
| 3G Bands | UMTS 2100 / 900 MHz | UMTS 2100 / 850 / 900 MHz |
| 2G Bands | GSM 1800 / 900 MHz | GSM 1800 / 850 / 900 MHz |
| GPRS | Available | — |
| EDGE | Available | — |
| SIM 2 | - | - |
| SAR Value | Head: 1.176 W/kg, Body: 1.186 W/kg | — |
| 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), Dual band (2.4 GHz + 5 GHz) |
| Wi-Fi Features | Mobile Hotspot | — |
| Bluetooth | Yes, v5.3 | Yes, v5.4 |
| GPS | Yes with A-GPS, Glonass | Yes with A-GPS, Glonass, Galileo |
| NFC | No | No |
| USB Connectivity | Mass storage device, USB charging | USB Type-C, USB charging |
| Multimedia | ||
| FM Radio | No | Yes |
| Stereo Speaker | No | No |
| Loudspeaker | Yes | No |
| Audio Jack | 3.5 mm | 3.5 mm |
| Audio Features | — | 200% Super Volume boost |
| Sensors | ||
| Fingerprint Sensor | Yes | Yes |
| Fingerprint Sensor Position | Side | Side |
| Heart Rate Monitor | No | No |
| Other Sensors | Light sensor, Proximity sensor, Accelerometer, Compass | Ambient light sensor (virtual), Proximity sensor (virtual), Accelerometer, Electronic compass |
| Fingerprint Sensor Type | — | Capacitive |