Phone Comparison - vivo Y55s vs Xiaomi Redmi 5a vs Samsung Galaxy S9+
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| Manufacturer | vivo | Xiaomi | Samsung |
| Announced | February 2017 | October 2017 | February 2018 |
| Status | Coming Soon - February 2017 | Available - October 2017 | Coming Soon, March 2018 |
| Price | - | Rs. 4,999 ($90.00) [Similarly Priced] | Rs. 57,999 ($890.00) [Similarly Priced] |
| Colors | Crown Gold, Space Gray | Gold, Rose Gold, Gray | Various |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension | - |
140.4 x 70.1 x 8.4 mm (5.53 x 2.76 x 0.33 in) |
158.1 x 73.8 x 8.5 mm (6.22 x 2.91 x 0.33 in) |
| Weight | - | 137 g (4.83 oz) | 189 g (6.67 oz) |
| SIM Type | Dual SIM | Hybrid Dual SIM (Nano-SIM, dual stand-by) | Single SIM (Nano-SIM), Hybrid Dual SIM (Nano-SIM, dual stand-by) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA 800 & TD-SCDMA |
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only) |
| 3G Network | HSDPA 900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 |
| 4G Network | LTE band 3(1800), 5(850), 40(2300) | LTE band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500) | LTE |
| Messaging | SMS, MMS, EMail, IM | SMS, MMS, EMail, IM | SMS, MMS, EMail, IM |
| Build Features | - | - | - Fingerprint Sensor - Samsung Pay (Visa, MasterCard certified) - IP68 certified - dust/water proof over 1.5 meter and 30 minutes |
| Notification LED | No | Yes | Yes |
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| OS | Android OS, v6.0 (Marshmallow) | Android 7.1 (Nougat) | Android 8.0 (Oreo) |
| User Interface | - | MIUI 9 | - |
| Processor | Quad-core 1.2 GHz Cortex-A53, Qualcomm MSM8917 Snapdragon 425 | Quad-core 1.4 GHz Cortex-A53, Qualcomm MSM8917 Snapdragon 425 | Octa-core (4x2.8 GHz Mongoose M3 & 4x1.7 GHz Cortex-A55) - EMEA Octa-core (4x2.7 GHz Kryo 385 Gold & 4x1.7 GHz Kryo 385 Silver) - USA & China, Exynos 9810 Octa - EMEA Qualcomm Snapdragon 845 |
| GPU | Adreno 306 | Adreno 308 | Mali-G72 MP18 - EMEA Adreno 630 - USA & China |
| RAM | 3 GB | 2 GB | 6 GB |
| Internal Memory | 16 GB | 16 GB | 64 GB |
| External Memory | microSD, up to 256 GB (dedicated slot) | microSD, up to 256 GB (uses SIM 2 slot) | microSD, up to 256 GB (uses SIM 2 slot) - dual SIM model only |
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| Type | IPS LCD Capacitive Touchscreen | IPS LCD Capacitive Touchscreen | Super AMOLED Capacitive Touchscreen, Corning Gorilla Glass 5 |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 5.2 inches | 5.0 inches | 6.2 inches |
| Resolution | 720 x 1280 pixels (282 ppi) | 720 x 1280 pixels (294 ppi) | 1440 x 2960 pixels (531 ppi) |
| Screen-to-Body Ratio | - | 69.89% | 83.59% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | FM radio | FM radio | No |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 13 MP | 13 MP | Dual12 MP + 12 MP |
| Flash | LED Flash | LED Flash | LED Flash |
| Features | Autofocus, Geo-tagging, Touch Focus, Face Detection, HDR, Panorama | Autofocus, f/2.2, Geo-tagging, Touch Focus, Face/smile Detection, HDR, Panorama | Phase Detection Autofocus, f/1.6 + f/2.4, 26mm, 1/2.55", 1.4 µm, 52mm, 1/3.6", 1 µm, Dual Pixel AF, OIS, 2x Optical Zoom, Geo-tagging, Simultaneous 4K Video And 9MP Image Recording, Touch Focus, Face/smile Detection, Auto HDR, Panorama |
| Video | 1080p@30fps | 1080p@30fps | 2160p@30fps, 1080p@60fps, HDR, dual-video rec. |
| Front Camera | 5 MP [Similar] | 5 MP, f/2.0 [Similar] | 8 MP, f/1.6, autofocus, 1440p, dual video call, Auto HDR [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps, VoLTE | HSPA, LTE, VoLTE | HSPA 42.2/5.76 Mbps, LTE-A (4CA) Cat16 1024/150 Mbps |
| Bluetooth | v4.0, A2DP | 4.1, A2DP, LE | 5.0, A2DP, LE, aptX |
| 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/ac, dual-band, Wi-Fi Direct, hotspot |
| USB | microUSB v2.0 | microUSB 2.0 | 3.1, Type-C 1.0 reversible connector |
| GPS | Yes, with A-GPS, BDS | Yes, with A-GPS, GLONASS, BDS | Yes, with A-GPS, GLONASS, BDS, GALILEO |
| Browser | HTML5 | HTML5 | HTML5 |
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| Internal | 16 GB, 3 GB RAM | 16 GB, 2 GB RAM | 64 GB, 6 GB RAM |
| Expandable Storage | microSD, up to 256 GB (dedicated slot) | microSD, up to 256 GB (uses SIM 2 slot) | microSD, up to 256 GB (uses SIM 2 slot) - dual SIM model only |
| USB OTG | Not 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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| Light Sensor | |
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| Magnetic-Field Sensor (Compass) | |
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| Gyroscope Sensor | |
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| Barometer Sensor | |
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| Heart-rate 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 | 2730 mAh | 3000 mAh | 3500 mAh |
| Stand by | - | - | - |
| Talk Time | - | - | - |
