OPPO K13x 5G vs Infinix Smart 4 Plus comparison
        
        
            
                
                    
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                    | ratings | 
| Overall NDTV Rating | Read Review | - | 
| Design Rating |  | - | 
| Display Rating |  | - | 
| Software Rating |  | - | 
| Performance Rating |  | - | 
| Battery Life Rating |  | - | 
| Camera Rating |  | - | 
| Value for Money Rating |  | - | 
| key specs | 
| Display | 6.67-inch | 6.82-inch | 
| Processor | MediaTek Dimensity 6300 | MediaTek Helio A25 | 
| Front Camera | 8-megapixel | 8-megapixel | 
| Rear Camera | 50-megapixel + 2-megapixel | 13-megapixel + Depth Sensor | 
| RAM | 4GB, 6GB, 8GB | 3GB | 
| Storage | 128GB | 32GB | 
| Battery Capacity | 6000mAh | 6000mAh | 
| OS | Android 15 | Android 10 | 
| Resolution | 720x1604 pixels | 720x1640 pixels | 
| general | 
| Brand | OPPO | Infinix | 
| Model | K13x 5G | Smart 4 Plus | 
| Release date | June 23, 2025 | July 21, 2020 | 
| AI Enabled | Yes | - | 
| Launched in India | Yes | Yes | 
| Form factor | Touchscreen | Touchscreen | 
| Dimensions (mm) | 165.70 x 76.24 x 7.99 | 171.82 x 77.96 x 8.90 | 
| Weight (g) | 194.00 | 207.00 | 
| IP rating | IP65 | - | 
| Battery capacity (mAh) | 6000 | 6000 | 
| Fast charging | 45W Fast Charging | - | 
| Colours | Midnight Violet, Sunset Peach | Midnight Black, Ocean Wave, Violet | 
| Removable battery | - | No | 
| Wireless charging | - | No | 
| display | 
| Refresh Rate | 120 Hz | - | 
| Resolution Standard | HD+ | - | 
| Screen size (inches) | 6.67 | 6.82 | 
| Touchscreen | Yes | Yes | 
| Resolution | 720x1604 pixels | 720x1640 pixels | 
| Aspect ratio | - | 20.5:9 | 
| hardware | 
| Processor | octa-core | octa-core | 
| Processor make | MediaTek Dimensity 6300 | MediaTek Helio A25 | 
| RAM | 4GB, 6GB, 8GB | 3GB | 
| Internal storage | 128GB | 32GB | 
| Expandable storage | - | Yes | 
| Expandable storage type | - | microSD | 
| Expandable storage up to (GB) | - | 256 | 
| Dedicated microSD slot | - | Yes | 
| camera | 
| Rear camera | 50-megapixel (f/1.8) + 2-megapixel (f/2.4) | 13-megapixel (f/1.8) + Depth Sensor | 
| No. of Rear Cameras | 2 | - | 
| Rear flash | Yes | - | 
| Front camera | 8-megapixel (f/2.0) | 8-megapixel (f/2.0) | 
| No. of Front Cameras | 1 | - | 
| Rear autofocus | - | Yes | 
| software | 
| Operating system | Android 15 | Android 10 | 
| Skin | ColorOS 15 | XOS 6.2 | 
| connectivity | 
| Wi-Fi | Yes | Yes | 
| Wi-Fi standards supported | 802.11 a/b/g/n/ac | 802.11 a/b/g/n | 
| GPS | Yes | Yes | 
| Bluetooth | Yes, v 5.40 | Yes, v 4.20 | 
| NFC | Yes | No | 
| USB Type-C | Yes | - | 
| Headphones | 3.5mm | - | 
| Number of SIMs | 2 | 2 | 
| Active 4G on both SIM cards | Yes | Yes | 
| Wi-Fi Direct | - | Yes | 
| sim 1 | 
| SIM Type | - | Nano-SIM | 
| 3G | - | Yes | 
| 4G/ LTE | - | Yes | 
| sim 2 | 
| SIM Type | - | Nano-SIM | 
| 3G | - | Yes | 
| 4G/ LTE | - | Yes | 
| sensors | 
| Face unlock | - | Yes | 
| Fingerprint sensor | - | Yes | 
| Compass/ Magnetometer | - | Yes | 
| Proximity sensor | - | Yes | 
| Accelerometer | - | Yes | 
| Ambient light sensor | - | Yes |