Phone Comparison - Xiaomi Redmi 4A vs Vivo Y66 vs Nokia 5.1
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| Price Comparison (India) | - | - | |
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| Manufacturer | Xiaomi | vivo | Nokia |
| Announced | November 2016 | December 2016 | May 2018 |
| Status | Available - November 2016 | Available - December 2016 | Available - August 2018 |
| Price | Rs. 5,999 ($92.00) [Similarly Priced] | Rs. 14,990 ($216.00) [Similarly Priced] | Rs. 10,999 ($0.00) [Similarly Priced] |
| Colors | Gold, Rose Gold, Dark Gray | Gold | Copper, Tempered Blue, Black |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
139.5 x 70.4 x 8.5 mm (5.49 x 2.77 x 0.33 in) |
153.56 x 75.79 x 7.49 mm (6.05 x 2.98 x 0.29 in) |
151.1 x 70.7 x 8.2 mm (5.95 x 2.78 x 0.32 in) |
| Weight | 131.5 g (4.62.0.18 oz) | 157 g (5.54 oz) | - |
| SIM Type | Dual SIM Hybrid (Nano SIM + Micro SIM, or Micro SIM + microSD Card) | Dual SIM Hybrid (Nano SIM + Micro SIM, or Micro SIM + microSD Card) | Dual SIM (Nano-SIM, dual stand-by) |
| 2G Network | GSM 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA2000 1xEV-DO |
GSM 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA2000 1xEV-DO |
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 GSM 900 / 1800 - India |
| 3G Network | HSDPA 850 / 1900 / 2100 | HSDPA 850 / 1900 / 2100 | HSDPA 850 / 900 / 2100 - APAC, EMEA, HK HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 - LATAM, AU, TW |
| 4G Network | LTE band 1(2100), 3(1800), 7(2600), 38(2600), 39(1900), 40(2300), 41(2500) | LTE band 1(2100), 3(1800), 7(2600), 38(2600), 39(1900), 40(2300), 41(2500) | LTE band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 20(800), 38(2600), 40(2300) - APAC, EMEA, HK |
| SAR EU |
- W/kg (head) - W/kg (body) |
- W/kg (head) - W/kg (body) |
0.29 W/kg (head) 0.61 W/kg (body) |
| Messaging | SMS, MMS, EMail, IM | SMS, MMS, EMail, IM | |
| Build Features | - Metal Body - Infrared Sensor |
- Metal Body - 2.5D Curved Glass |
- Fingerprint Sensor |
| Notification LED | - | Yes | Yes |
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| OS | Android OS, v6.0.1 (Marshmallow) | Android OS, v6.0.1 (Marshmallow) | Android 8.0 (Oreo) |
| User Interface | MIUI 8 | FunTouch OS 3.0 | Android One |
| Processor | Quad-core 1.4 GHz Cortex-A53, Qualcomm MSM8917 Snapdragon 425 | Octa-core 1.4 GHz Cortex-A53, Qualcomm MSM8937 Snapdragon 430 | Octa-core (4x2.0 GHz Cortex-A53 & 4x1.2 GHz Cortex-A53), MediaTek Helio P18 |
| GPU | Adreno 308 | Adreno 505 | Mali-T860MP2 |
| RAM | 2 GB | 3 GB | 3 |
| Internal Memory | 16 GB | 32 GB | 32 GB |
| External Memory | microSD, up to 128 GB (uses SIM 2 slot) | microSD, up to 128 GB | microSD, up to 256 GB (dedicated slot) |
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| Type | IPS LCD capacitive touchscreen | IPS LCD capacitive touchscreen | IPS LCD Capacitive Touchscreen, Corning Gorilla Glass (unspecified Version) |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 5.0 inches | 5.5 inches | 5.5 inches |
| Resolution | 720 x 1280 pixels (294 ppi) | 720 x 1280 pixels (267 ppi) | 1080 x 2160 pixels (439 ppi) |
| Screen-to-Body Ratio | 70.04% | 71.66% | 73.10% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | FM radio | FM radio | FM radio |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 13 MP, 4160 x 3120 pixels | 13 MP, 4160 x 3120 pixels | 16 MP |
| Flash | LED Flash | LED Flash | Dual-LED Dual-tone Flash |
| Features | Phase Detection Autofocus, f/2.2, Geo-tagging, Touch Focus, Face/smile Detection, HDR, Panorama | AutoFocus, Geo-tagging, Touch Focus, Face/smile Detection, HDR, Panorama | 16 MP, PDAF HDR, Panorama |
| Video | 1080p@30fps | 1080p@30fps | 1080p@30fps |
| Front Camera | 5 MP, f/2.2, 1080p@30fps [Similar] | 5 MP [Similar] | 8 MP [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSPA, LTE, EV-DO Rev.A 3.1 Mbps, VoLTE | HSPA, LTE, EV-DO Rev.A 3.1 Mbps, VoLTE | HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps |
| Bluetooth | v4.1, A2DP | v4.1, A2DP | 4.2, A2DP, LE |
| Wi-Fi | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot | Wi-Fi 802.11 a/b/g/n, dual-band, WiFi Direct, hotspot |
| USB | microUSB v2.0 | microUSB v2.0 | microUSB 2.0, USB On-The-Go |
| GPS | Yes, with A-GPS, GLONASS, BDS | Yes, with A-GPS, GLONASS, BDS | Yes, with A-GPS, GLONASS, BDS |
| Browser | HTML5 | HTML5 | Yes |
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| Internal | 16 GB, 2 GB RAM | 32 GB, 3 GB RAM | 32 GB, 3 RAM or 16 GB, 2 GB RAM |
| Expandable Storage | microSD, up to 128 GB (uses SIM 2 slot) | microSD, up to 128 GB | microSD, up to 256 GB (dedicated slot) |
| 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 | Non-removable Li-Ion Battery | Non-removable Li-Ion Battery | Non-removable Li-Ion Battery |
| Capacity | 3120 mAh | 3000 mAh | 2970 mAh |
| Stand by | - | - | - |
| Talk Time | - | - | Up to 19 h (3G) |
Rs. 9,699 
Rs. 9,990 
