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- Lava Z81 vs Lava Z61 vs Lenovo K8 Plus vs Xiaomi Redmi 4
Lava Z81 vs Lava Z61 vs Lenovo K8 Plus vs Xiaomi Redmi 4 comparison
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| key specs | ||||
| Display | 5.70-inch | 5.45-inch | 5.20-inch | 5.00-inch |
| Processor | MediaTek Helio A22 | 1.5GHz quad-core | MediaTek Helio P25 | Qualcomm Snapdragon 435 |
| Front Camera | 13-megapixel | 5-megapixel | 8-megapixel | 5-megapixel |
| Rear Camera | 13-megapixel | 8-megapixel | 13-megapixel + 5-megapixel | 13-megapixel |
| RAM | 2GB | 1GB | 3GB | 3GB |
| Storage | 32GB | 16GB | 32GB | 32GB |
| Battery Capacity | 3000mAh | 3000mAh | 4000mAh | 4100mAh |
| OS | Android 8.1 Oreo | Android Oreo (Go edition) | Android 7.1.1 | Android 6.0.1 |
| Resolution | 720x1440 pixels | - | 1080x1920 pixels | 720x1280 pixels |
| general | ||||
| Brand | Lava | Lava | Lenovo | Xiaomi |
| Model | Z81 | Z61 | K8 Plus | Redmi 4 |
| Release date | November 1, 2018 | July 1, 2018 | September 1, 2017 | November 1, 2016 |
| Launched in India | Yes | Yes | Yes | Yes |
| Form factor | Touchscreen | Touchscreen | Touchscreen | Touchscreen |
| Dimensions (mm) | 152.20 x 73.00 x 7.90 | - | 147.90 x 73.70 x 8.99 | 139.30 x 69.90 x 8.65 |
| Weight (g) | 141.60 | - | 165.00 | 150.00 |
| Battery capacity (mAh) | 3000 | 3000 | 4000 | 4100 |
| Colours | Black and Gold | Black, Gold | Fine Gold, Venom Black | Gold, Black |
| Removable battery | - | - | No | No |
| SAR value | - | - | 0.54 | - |
| display | ||||
| Screen size (inches) | 5.70 | 5.45 | 5.20 | 5.00 |
| Touchscreen | Yes | Yes | Yes | Yes |
| Resolution | 720x1440 pixels | - | 1080x1920 pixels | 720x1280 pixels |
| Protection type | Gorilla Glass | Gorilla Glass | Gorilla Glass | Gorilla Glass |
| Aspect ratio | 18:9 | 18:9 | 16:9 | 16:9 |
| Pixels per inch (PPI) | 282 | - | 424 | 296 |
| hardware | ||||
| Processor | 2GHz quad-core | 1.5GHz quad-core | 2.5GHz octa-core | 1.4GHz octa-core |
| Processor make | MediaTek Helio A22 (MT6761) | - | MediaTek Helio P25 (MT6757CD) | Qualcomm Snapdragon 435 |
| RAM | 2GB | 1GB | 3GB | 3GB |
| Internal storage | 32GB | 16GB | 32GB | 32GB |
| Expandable storage | Yes | - | Yes | Yes |
| Expandable storage type | microSD | - | microSD | microSD |
| Expandable storage up to (GB) | 128 | - | 128 | 128 |
| camera | ||||
| Rear camera | 13-megapixel | 8-megapixel | 13-megapixel (f/2.0) + 5-megapixel | 13-megapixel |
| Front camera | 13-megapixel | 5-megapixel | 8-megapixel | 5-megapixel |
| Rear autofocus | - | Yes | Phase detection autofocus | - |
| Rear flash | - | Yes | Dual LED | LED |
| Front flash | - | LED | Yes | - |
| software | ||||
| Operating system | Android 8.1 Oreo | Android Oreo (Go edition) | Android 7.1.1 | Android 6.0.1 |
| Skin | Star OS 5.0 | - | - | MIUI 8 |
| connectivity | ||||
| Wi-Fi | Yes | Yes | Yes | Yes |
| Wi-Fi standards supported | 802.11 b/g/n | - | 802.11 a/b/g/n/ac | 802.11 b/g/n |
| GPS | Yes | Yes | Yes | Yes |
| Bluetooth | Yes, v 4.10 | Yes | Yes, v 4.20 | Yes, v 4.10 |
| Micro-USB | Yes | - | Yes | Yes |
| FM | Yes | - | Yes | Yes |
| Number of SIMs | 2 | - | 2 | 2 |
| Active 4G on both SIM cards | Yes | - | - | - |
| NFC | - | - | No | No |
| Infrared | - | - | No | Yes |
| USB OTG | - | - | Yes | Yes |
| Headphones | - | - | 3.5mm | 3.5mm |
| Wi-Fi Direct | - | - | No | No |
| Mobile High-Definition Link (MHL) | - | - | No | No |
| sim 1 | ||||
| SIM Type | Nano-SIM | - | Nano-SIM | Micro-SIM |
| GSM/CDMA | GSM | - | GSM | GSM |
| 3G | Yes | - | Yes | Yes |
| 4G/ LTE | Yes | - | Yes | Yes |
| sim 2 | ||||
| SIM Type | Nano-SIM | - | Nano-SIM | Nano-SIM |
| GSM/CDMA | GSM | - | GSM | GSM |
| 3G | Yes | - | No | Yes |
| 4G/ LTE | Yes | - | No | Yes |
| sensors | ||||
| Face unlock | Yes | - | - | - |
| Fingerprint sensor | Yes | - | Yes | Yes |
| Compass/ Magnetometer | No | - | Yes | Yes |
| Proximity sensor | Yes | Yes | Yes | Yes |
| Accelerometer | Yes | Yes | Yes | Yes |
| Ambient light sensor | Yes | - | Yes | Yes |
| Gyroscope | - | - | Yes | Yes |
| Barometer | - | - | No | No |
| Temperature sensor | - | - | No | No |
| ratings | ||||
| Overall NDTV Rating | - | - | Read Review | Read Review |
| Design Rating | - | - | ||
| Display Rating | - | - | ||
| Software Rating | - | - | ||
| Performance Rating | - | - | ||
| Battery Life Rating | - | - | ||
| Camera Rating | - | - | ||
| Value for Money Rating | - | - | ||
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