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| key specs | ||||
| Display | 5.20-inch | 4.70-inch | 5.00-inch | 4.70-inch |
| Processor | Qualcomm Snapdragon 630 | Qualcomm Snapdragon 210 | MediaTek Helio P20 | Qualcomm Snapdragon 617 |
| Front Camera | 8-megapixel | 2-megapixel | 8-megapixel | 5-megapixel |
| Rear Camera | 16-megapixel | 8-megapixel | 13-megapixel | 13-megapixel |
| RAM | 4GB | 2GB | 3GB | 3GB |
| Storage | 64GB | 16GB | 32GB | 32GB |
| Battery Capacity | 4500mAh | 4000mAh | 5000mAh | 3800mAh |
| OS | Android 8.0 | Android 7.1 | Android 7.1 | Android 6.0 |
| Resolution | 1080x1920 pixels | 720x1280 pixels | 1080x1920 pixels | 720x1280 pixels |
| general | ||||
| Brand | Cat | Cat | Cat | Cat |
| Model | S61 | S31 | S41 | S60 |
| Release date | February 1, 2018 | September 1, 2017 | September 1, 2017 | March 1, 2017 |
| Form factor | Touchscreen | Touchscreen | Touchscreen | Touchscreen |
| Dimensions (mm) | 150.00 x 76.00 x 13.00 | 146.00 x 74.42 x 12.60 | 152.00 x 75.00 x 12.85 | 147.90 x 73.40 x 12.66 |
| Battery capacity (mAh) | 4500 | 4000 | 5000 | 3800 |
| Weight (g) | - | 200.00 | 218.00 | 223.00 |
| Removable battery | - | No | No | No |
| display | ||||
| Screen size (inches) | 5.20 | 4.70 | 5.00 | 4.70 |
| Touchscreen | Yes | Yes | Yes | Yes |
| Resolution | 1080x1920 pixels | 720x1280 pixels | 1080x1920 pixels | 720x1280 pixels |
| hardware | ||||
| Processor | 2.2GHz octa-core | quad-core | 2.3GHz octa-core | 1.2GHz octa-core |
| Processor make | Qualcomm Snapdragon 630 | Qualcomm Snapdragon 210 | MediaTek Helio P20 (MT6757) | Qualcomm Snapdragon 617 |
| RAM | 4GB | 2GB | 3GB | 3GB |
| Internal storage | 64GB | 16GB | 32GB | 32GB |
| Expandable storage | Yes | Yes | Yes | Yes |
| Expandable storage type | microSD | microSD | microSD | microSD |
| Expandable storage up to (GB) | - | 128 | 2000 | 128 |
| camera | ||||
| Rear camera | 16-megapixel | 8-megapixel | 13-megapixel | 13-megapixel |
| Rear flash | LED | LED | LED | Dual LED |
| Front camera | 8-megapixel | 2-megapixel | 8-megapixel | 5-megapixel |
| Front flash | - | No | No | No |
| software | ||||
| Operating system | Android 8.0 | Android 7.1 | Android 7.1 | Android 6.0 |
| connectivity | ||||
| Wi-Fi | Yes | Yes | Yes | Yes |
| Wi-Fi standards supported | 802.11 b/g/n | 802.11 b/g/n | 802.11 b/g/n | 802.11 b/g/n |
| Bluetooth | Yes, v 5.00 | Yes, v 4.10 | Yes, v 4.10 | Yes, v 4.10 |
| NFC | Yes | No | No | Yes |
| FM | Yes | Yes | Yes | Yes |
| GPS | - | Yes | Yes | Yes |
| Infrared | - | No | No | No |
| USB OTG | - | No | No | Yes |
| Headphones | - | 3.5mm | 3.5mm | 3.5mm |
| Number of SIMs | - | 2 | 2 | 2 |
| Wi-Fi Direct | - | No | No | No |
| Mobile High-Definition Link (MHL) | - | No | No | No |
| sensors | ||||
| Compass/ Magnetometer | Yes | Yes | Yes | Yes |
| Proximity sensor | Yes | Yes | No | Yes |
| Accelerometer | Yes | Yes | No | Yes |
| Ambient light sensor | Yes | Yes | Yes | Yes |
| Gyroscope | Yes | No | No | No |
| Barometer | Yes | No | No | No |
| Temperature sensor | - | No | No | No |
| sim 1 | ||||
| SIM Type | - | Nano-SIM | Nano-SIM | Nano-SIM |
| GSM/CDMA | - | GSM | GSM | GSM |
| 3G | - | No | No | Yes |
| 4G/ LTE | - | No | No | Yes |
| sim 2 | ||||
| 3G | - | No | No | Yes |
| 4G/ LTE | - | No | No | Yes |
| SIM Type | - | - | - | Nano-SIM |
| GSM/CDMA | - | - | - | GSM |
| ratings | ||||
| Overall NDTV Rating | - | - | - | Read Review |
| Design Rating | - | - | - | |
| Display Rating | - | - | - | |
| Software Rating | - | - | - | |
| Performance Rating | - | - | - | |
| Battery Life Rating | - | - | - | |
| Camera Rating | - | - | - | |
| Value for Money Rating | - | - | - | |
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