Phone Comparison - Vivo Y21L vs Xiaomi Redmi 4A vs Micromax Bolt Warrior 2 Q4202
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| Manufacturer | vivo | Xiaomi | Micromax |
| Announced | August 2016 | November 2016 | December 2016 |
| Status | Available - August 2016 | Available - November 2016 | Available - December 2016 |
| Price | Rs. 7,170 ($105.44) [Similarly Priced] | Rs. 5,999 ($92.00) [Similarly Priced] | Rs. 6,477 ($96.00) [Similarly Priced] |
| Colors | Black, White | Gold, Rose Gold, Dark Gray | Black |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
130.7 x 66.4 x 9.2 mm (5.15 x 2.61 x 0.36 in) |
139.5 x 70.4 x 8.5 mm (5.49 x 2.77 x 0.33 in) |
142.5 x 71.7 x 9.6 mm (5.61 x 2.82 x 0.38 in) |
| Weight | 145 g (5.11 oz) | 131.5 g (4.62.0.18 oz) | - |
| SIM Type | - | Dual SIM Hybrid (Nano SIM + Micro SIM, or Micro SIM + microSD Card) | Dual-SIM |
| 2G Network | GSM 850 / 900 / 1800 / 1900 | GSM 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA2000 1xEV-DO |
GSM 850 / 900 / 1800 / 1900 |
| 3G Network | HSDPA 850 / 1700 / 1900 / 2100 - XT1527, XT1511 HSDPA 850 / 900 / 1900 / 2100 - XT1505 |
HSDPA 850 / 1900 / 2100 | HSDPA |
| 4G Network | LTE 700 / 850 / 1700 / 1900 / 2100 / 2600 (Bands 2, 4, 5, 7, 12, 17) - XT1527 | LTE band 1(2100), 3(1800), 7(2600), 38(2600), 39(1900), 40(2300), 41(2500) | LTE |
| Messaging | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, EMail, IM | SMS, MMS, EMail, IM |
| Build Features | - | - Metal Body - Infrared Sensor |
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| OS | Android OS, v5.1 (Lollipop) | Android OS, v6.0.1 (Marshmallow) | Android OS, v6.0 (Marshmallow) |
| User Interface | - | MIUI 8 | - |
| Processor | Quad-core 1.2 GHz Cortex-A53, Qualcomm Snapdragon 410 | Quad-core 1.4 GHz Cortex-A53, Qualcomm MSM8917 Snapdragon 425 | Quad-core 1.1 GHz Cortex-A7, Qualcomm MSM8909 Snapdragon 210 |
| GPU | Adreno 306 | Adreno 308 | Adreno 304 |
| RAM | 1 GB | 2 GB | 1 GB |
| Internal Memory | 16 GB | 16 GB | 8 GB |
| External Memory | microSD, up to 32 GB | microSD, up to 128 GB (uses SIM 2 slot) | microSD, up to 32 GB |
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| Type | IPS LCD Capacitive Touchscreen, Corning Gorilla Glass 3 | IPS LCD capacitive touchscreen | IPS LCD Capacitive Touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 4.5 inches | 5.0 inches | 5.0 inches |
| Resolution | 480 x 854 pixels (218 ppi) | 720 x 1280 pixels (294 ppi) | 720 x 1280 Pixels (294 ppi) |
| Screen-to-Body Ratio | - | 70.04% | 67.33% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | FM radio with RDS | FM radio | FM Radio |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 5 MP, 2592 х 1944 pixels | 13 MP, 4160 x 3120 pixels | 5 MP, 2592 х 1944 pixels |
| Flash | LED Flash | LED Flash | LED flash |
| Features | Auto focus, Geo-tagging, Panorama, HDR | Phase Detection Autofocus, f/2.2, Geo-tagging, Touch Focus, Face/smile Detection, HDR, Panorama | AutoFocus, Geotagging, HDR, Panorama |
| Video | 720p@30fps | 1080p@30fps | Yes |
| Front Camera | 2 MP [Similar] | 5 MP, f/2.2, 1080p@30fps [Similar] | 2 MP [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSPA, LTE | HSPA, LTE, EV-DO Rev.A 3.1 Mbps, VoLTE | HSPA, LTE |
| Bluetooth | v4.0, LE | v4.1, A2DP | v4.1, A2DP |
| Wi-Fi | Wi-Fi 802.11 b/g/n, hotspot | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot | Wi-Fi 802.11 b/g/n, hotspot |
| USB | microUSB v2.0, USB OTG | microUSB v2.0 | microUSB v2.0 |
| GPS | Yes, with A-GPS, GLONASS | Yes, with A-GPS, GLONASS, BDS | Yes, with A-GPS |
| Browser | HTML | HTML5 | HTML |
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| Internal | 16 GB, 1 GB RAM | 16 GB, 2 GB RAM | 8 GB, 1 GB RAM |
| Expandable Storage | microSD, up to 32 GB | microSD, up to 128 GB (uses SIM 2 slot) | microSD, up to 32 GB |
| USB OTG | Supported | Supported | Not 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-Ion Battery | Li-Ion Battery |
| Capacity | 2000 mAh | 3120 mAh | 2000 mAh |
| Stand by | - | - | Up to 220 h |
| Talk Time | - | - | Up to 6 h |
