Phone Comparison - Samsung Galaxy Core 2 Duos vs Samsung Galaxy A7 vs Xiaomi Redmi 4A
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| Manufacturer | Samsung | Samsung | Xiaomi |
| Announced | June 2014 | Expected Announcement - December 2014 | November 2016 |
| Status | Available - July 2014 | Rumored - January 2015 | Available - November 2016 |
| Price | - | Rs. 19,499 ($286.75) [Similarly Priced] | Rs. 5,999 ($92.00) [Similarly Priced] |
| Colors | White, Black | Pearl White, Midnight Black, Platinum Silver, Soft Pink, Light B | Gold, Rose Gold, Dark Gray |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
130.3 x 68 x 9.8 mm (5.13 x 2.68 x 0.39 in) |
150.9 x 75.9 x 6.3 mm (5.94 x 2.99 x 0.25 in) |
139.5 x 70.4 x 8.5 mm (5.49 x 2.77 x 0.33 in) |
| Weight | 138 g (4.87 oz) | 133 g (4.69 oz) | 131.5 g (4.62.0.18 oz) |
| SIM Type | - | - | Dual SIM Hybrid (Nano SIM + Micro SIM, or Micro SIM + microSD Card) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 - SM-A700*/DS |
GSM 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA2000 1xEV-DO |
| 3G Network | HSDPA 900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 850 / 1900 / 2100 |
| 4G Network | - | LTE | LTE band 1(2100), 3(1800), 7(2600), 38(2600), 39(1900), 40(2300), 41(2500) |
| Messaging | SMS, MMS, EMail, IM | SMS, MMS, EMail, IM | SMS, MMS, EMail, IM |
| Build Features | - | - | - Metal Body - Infrared Sensor |
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| OS | Android OS, v4.4.2 (KitKat) | Android OS, v4.4.4 (KitKat) | Android OS, v6.0.1 (Marshmallow) |
| Processor | Quad-core 1.2 GHz | Quad-core 1.5 GHz Cortex-A53 & quad-core 1.0 GHz Cortex-A53, Qualcomm MSM8939 Snapdragon 615 | Quad-core 1.4 GHz Cortex-A53, Qualcomm MSM8917 Snapdragon 425 |
| GPU | - | Adreno 405 | Adreno 308 |
| RAM | 768 MB | 2 GB | 2 GB |
| Internal Memory | 4 GB | 16 GB | 16 GB |
| External Memory | microSD, up to 64 GB | microSD, up to 64 GB | microSD, up to 128 GB (uses SIM 2 slot) |
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| Type | TFT capacitive touchscreen | Super AMOLED capacitive touchscreen | IPS LCD capacitive touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 4.5 inches | 5.5 inches | 5.0 inches |
| Resolution | 480 x 800 pixels (207 ppi) | 1080 x 1920 pixels (401 ppi) | 720 x 1280 pixels (294 ppi) |
| Screen-to-Body Ratio | 65.25% | 72.64% | 70.04% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | 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 | 12 MP, 4608 x 2592 pixels | 13 MP, 4160 x 3120 pixels |
| Flash | LED flash | LED flash | LED Flash |
| Features | Auto focus, Geo-tagging, Touch Focus, Face And Smile Detection | Auto focus, Geo-tagging, Touch Focus, Face Detection, Panorama | Phase Detection Autofocus, f/2.2, Geo-tagging, Touch Focus, Face/smile Detection, HDR, Panorama |
| Video | Yes | 1080p@30fps | 1080p@30fps |
| Front Camera | Yes, VGA [Similar] | 5 MP [Similar] | 5 MP, f/2.2, 1080p@30fps [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, EV-DO Rev.A 3.1 Mbps, VoLTE |
| Bluetooth | Yes, v4.0 with A2DP | v4.0, A2DP, EDR, LE | v4.1, A2DP |
| Wi-Fi | Wi-Fi 802.11 b/g/n, Wi-Fi hotspot | Wi-Fi 802.11 a/b/g/n, dual-band, hotspot | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot |
| USB | Yes, microUSB v2.0 | microUSB v2.0 | microUSB v2.0 |
| GPS | Yes, with A-GPS support and GLONASS | Yes, with A-GPS, GLONASS | Yes, with A-GPS, GLONASS, BDS |
| Browser | HTML | HTML5 | HTML5 |
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| Internal | 4 GB, 768 MB RAM | 16 GB, 2 GB RAM | 16 GB, 2 GB RAM |
| Expandable Storage | microSD, up to 64 GB | microSD, up to 64 GB | microSD, up to 128 GB (uses SIM 2 slot) |
| USB OTG | - | - | 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 | Non-removable Li-Ion Battery |
| Capacity | 2000 mAh | 2600 mAh | 3120 mAh |
| Stand by | - | - | - |
| Talk Time | - | - | - |
