Vivo T4 Pro vs Vivo Y66 comparison
        
        
            
                
                    
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                    | key specs | 
| Display | 6.77-inch | 5.50-inch | 
| Front Camera | 32-megapixel | 16-megapixel | 
| Rear Camera | 50-megapixel + 50-megapixel + 2-megapixel | 13-megapixel | 
| RAM | 8GB, 12GB | 3GB | 
| Storage | 128GB, 256GB | 32GB | 
| Battery Capacity | 6500mAh | 3000mAh | 
| OS | Android 15 | Android 6.0 | 
| Resolution | 1080x2392 pixels | 720x1280 pixels | 
| Processor | - | octa-core | 
| general | 
| Brand | Vivo | Vivo | 
| Model | T4 Pro | Y66 | 
| Release date | August 26, 2025 | March 1, 2017 | 
| AI Enabled | Yes | - | 
| Launched in India | Yes | - | 
| Form factor | Touchscreen | Touchscreen | 
| Dimensions (mm) | 163.53 x 76.96 x 7.53 | 153.80 x 75.50 x 7.60 | 
| Weight (g) | 192.00 | 155.00 | 
| IP rating | IP69 | - | 
| Battery capacity (mAh) | 6500 | 3000 | 
| Removable battery | No | No | 
| Fast charging | 90W Fast Charging | - | 
| Wireless charging | No | - | 
| Colours | Blaze Gold, Nitro Blue | Crown Gold, Matte Black | 
| display | 
| Refresh Rate | 120 Hz | - | 
| Resolution Standard | FHD+ | - | 
| Screen size (inches) | 6.77 | 5.50 | 
| Touchscreen | Yes | Yes | 
| Resolution | 1080x2392 pixels | 720x1280 pixels | 
| hardware | 
| Processor make | Qualcomm Snapdragon 7 Gen 4 | - | 
| RAM | 8GB, 12GB | 3GB | 
| Internal storage | 128GB, 256GB | 32GB | 
| Processor | - | octa-core | 
| Expandable storage | - | Yes | 
| Expandable storage type | - | microSD | 
| Expandable storage up to (GB) | - | 256 | 
| camera | 
| Rear camera | 50-megapixel (f/1.79) + 50-megapixel (f/1.65) + 2-megapixel (f/2.4) | 13-megapixel | 
| No. of Rear Cameras | 3 | - | 
| Rear flash | Yes | LED | 
| Front camera | 32-megapixel (f/2.45) | 16-megapixel | 
| No. of Front Cameras | 1 | - | 
| Lens Type (Second Rear Camera) | Telephoto | - | 
| Front flash | - | Yes | 
| software | 
| Operating system | Android 15 | Android 6.0 | 
| Skin | FuntouchOS 15 | Funtouch 3.0 | 
| connectivity | 
| Wi-Fi | Yes | Yes | 
| Wi-Fi standards supported | 802.11 a/b/g/n/ac | 802.11 b/g/n | 
| GPS | Yes | Yes | 
| Bluetooth | Yes, v 5.40 | Yes, v 4.00 | 
| USB OTG | Yes | Yes | 
| USB Type-C | Yes | - | 
| Headphones | Type-C | Yes | 
| Number of SIMs | 2 | 2 | 
| Active 4G on both SIM cards | Yes | - | 
| NFC | - | No | 
| Infrared | - | No | 
| FM | - | Yes | 
| Wi-Fi Direct | - | No | 
| Mobile High-Definition Link (MHL) | - | No | 
| sensors | 
| In-Display Fingerprint Sensor | Yes | - | 
| Compass/ Magnetometer | Yes | No | 
| Proximity sensor | Yes | Yes | 
| Accelerometer | Yes | Yes | 
| Ambient light sensor | Yes | Yes | 
| Gyroscope | Yes | No | 
| Barometer | - | No | 
| Temperature sensor | - | No | 
| ratings | 
| Overall NDTV Rating | - | Read Review | 
| Design Rating | - |  | 
| Display Rating | - |  | 
| Software Rating | - |  | 
| Performance Rating | - |  | 
| Battery Life Rating | - |  | 
| Camera Rating | - |  | 
| Value for Money Rating | - |  | 
| sim 1 | 
| SIM Type | - | Micro-SIM | 
| 3G | - | Yes | 
| 4G/ LTE | - | Yes | 
| sim 2 | 
| SIM Type | - | Nano-SIM | 
| 3G | - | No | 
| 4G/ LTE | - | Yes |