Phone Comparison - Micromax Unite 2 A106 vs Lenovo K4 Note vs Vivo Y21L
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| Manufacturer | Micromax | Lenovo | vivo |
| Announced | May 2014 | January 2016 | August 2016 |
| Status | Available - May 2014 | Available - January 2016 | Available - August 2016 |
| Price | - | Rs. 10,999 ($161.75) [Similarly Priced] | Rs. 7,170 ($105.44) [Similarly Priced] |
| Colors | Pristine White, Balmy Green, Mystic Grey, Raging Red | Black | Black, White |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
138.9 x 71.9 x 9.4 mm (5.47 x 2.83 x 0.37 in) |
153.6 x 76.5 x 9.15 mm (6.05 x 3.01 x 0.36 in) |
130.7 x 66.4 x 9.2 mm (5.15 x 2.61 x 0.36 in) |
| Weight | 158.5 g (5.57.0.18 oz) | 158 g (5.57 oz) | 145 g (5.11 oz) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 |
| 3G Network | HSDPA 2100 | HSDPA 900 / 1900 / 2100 | HSDPA 850 / 1700 / 1900 / 2100 - XT1527, XT1511 HSDPA 850 / 900 / 1900 / 2100 - XT1505 |
| 4G Network | - | LTE | LTE 700 / 850 / 1700 / 1900 / 2100 / 2600 (Bands 2, 4, 5, 7, 12, 17) - XT1527 |
| Messaging | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, EMail, IM | SMS, MMS, Push Mail, EMail, IM |
| Build Features | - | - Fingerprint Sensor - Dual Front Speakers - Fast Charging |
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| OS | Android OS, v4.4.2 (KitKat) | Android OS, v5.1 (Lollipop) | Android OS, v5.1 (Lollipop) |
| Processor | Quad-core 1.3 GHz, Mediatek MT6582M | Octa-core 1.3 GHz Cortex-A53, Mediatek MT6753 | Quad-core 1.2 GHz Cortex-A53, Qualcomm Snapdragon 410 |
| GPU | Mali-400MP2 | Mali-T720MP3 | Adreno 306 |
| RAM | 1 GB | 3 GB | 1 GB |
| Internal Memory | 4/8 GB (0.89 GB for apps, 1.67 GB for mass storage) | 16 GB | 16 GB |
| External Memory | microSD, up to 32 GB | microSD, up to 128 GB | microSD, up to 32 GB |
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| Type | IPS LCD Capacitive Touchscreen | Capacitive Touchscreen, Corning Gorilla Glass 3 | IPS LCD Capacitive Touchscreen, Corning Gorilla Glass 3 |
| Colors | 16.7M colors | 16M colors | 16M colors |
| Size | 4.7 inches | 5.5 inches | 4.5 inches |
| Resolution | 480 x 800 pixels (199 ppi) | 1080 x 1920 pixels (401 ppi) | 480 x 854 pixels (218 ppi) |
| Screen-to-Body Ratio | 62.64% | 70.80% | - |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | FM Radio with Recording | FM Radio | FM radio with RDS |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 5 MP, 2592x1944 pixels | 13 MP, 4208 x 3120 pixels | 5 MP, 2592 х 1944 pixels |
| Flash | LED flash | Dual-LED (Dual Tone) | LED Flash |
| Features | Auto focus, Geo-tagging, Touch Focus, Face Detection, HDR | Phase Detection Auto focus, 1/3.06' Sensor Size, Geo-tagging, Touch Focus, Face Detection, HDR, Panorama | Auto focus, Geo-tagging, Panorama, HDR |
| Video | Yes, 1080p | 1080p@30fps | 720p@30fps |
| Front Camera | Yes, 2 MP, 720p [Similar] | 5 MP, 1080p [Similar] | 2 MP [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSDPA, 21 Mbps; HSUPA, 5.76 Mbps | HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps | HSPA, LTE |
| Bluetooth | Yes, v4.0 with A2DP | v4.0, A2DP, LE | v4.0, LE |
| Wi-Fi | Wi-Fi 802.11 b/g/n, Wi-Fi hotspot | Wi-Fi 802.11 a/b/g/n, dual-band, Wi-Fi Direct, hotspot | Wi-Fi 802.11 b/g/n, hotspot |
| USB | Yes, microUSB v2.0, USB On-the-go | microUSB v2.0, USB Host, Fast Charge 2.0 | microUSB v2.0, USB OTG |
| GPS | Yes, with A-GPS support | Yes, with A-GPS, GLONASS | Yes, with A-GPS, GLONASS |
| Browser | HTML5 | HTML5 | HTML |
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| Internal | 4/8 GB (0.89 GB for apps, 1.67 GB for mass storage), 1 GB RAM | 16 GB, 3 GB RAM | 16 GB, 1 GB RAM |
| Expandable Storage | microSD, up to 32 GB | microSD, up to 128 GB | microSD, up to 32 GB |
| USB OTG | Supported | Supported | Supported |
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| Fingerprint | |
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| Proximity Sensor | |
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| Accelerometer Sensor | |
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| NFC | |
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| Type | Li-Ion Battery | Non-removable Li-Po Battery | Li-Ion battery |
| Capacity | 2000 mAh | 3300 mAh | 2000 mAh |
| Stand by | Up to 190 h | Up to 265 h | - |
| Talk Time | Up to 8 h | Up to 22 h | - |
