Phone Comparison - Samsung Galaxy A3 Duos vs HTC Desire 820q Dual SIM vs Samsung Galaxy E7
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| Manufacturer | Samsung | HTC | Samsung |
| Announced | October 2014 | October 2014 | January 2015 |
| Status | Available - November 2014 | Available - October 2014 | Available - Feburary 2015 |
| Price | Rs. 14,265 ($209.78) [Similarly Priced] | Rs. 30,500 ($448.53) [Similarly Priced] | Rs. 17,400 ($255.88) [Similarly Priced] |
| Colors | Pearl White, Midnight Black, Platinum Silver, Soft Pink, Light B | Santorini White, Tuxedo Gray, Milky-way Gray | Black, White, Blue |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
130.1 x 65.5 x 6.9 mm (5.12 x 2.58 x 0.27 in) |
157.7 x 78.7 x 7.7 mm (6.21 x 3.1 x 0.3 in) |
151.4 x 77.2 x 7.3 mm (5.96 x 3.04 x 0.29 in) |
| Weight | 110.3 g (3.88.0.11 oz) | 155 g (5.47 oz) | 141 g (4.97 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 - SIM 1 & SIM 2 (optional) |
| 3G Network | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 |
| 4G Network | LTE | LTE 900 / 1800 / 2100 / 2600 TD-LTE 1900 / 2300 / 2500 / 2600 (Bands 1, 3, 7, 8, 38, 39, 40, 41) |
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| Messaging | SMS, MMS, EMail, IM | SMS, MMS, Push Mail, EMail | SMS, MMS, EMail, IM |
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| OS | Android OS, v4.4.4 (KitKat) | Android OS, v4.4.2 (KitKat) | Android OS, v4.4.4 (KitKat) |
| Processor | Quad-core 1.2 GHz Cortex-A53, Qualcomm MSM8916 Snapdragon 410 | Quad-core 1.2 GHz Cortex-A53, Qualcomm MSM8916 Snapdragon 410 | Quad-core 1.2 GHz Cortex-A53, Qualcomm MSM8916 Snapdragon 410 |
| GPU | Adreno 306 | Adreno 306 | Adreno 306 |
| RAM | 1 GB | 1 GB | 2 GB |
| Internal Memory | 16 GB | 16 GB | 16 GB |
| External Memory | No | microSD, up to 128 GB | microSD, up to 128 GB |
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| Type | Super AMOLED capacitive touchscreen | TFT Capacitive Touchscreen, Corning Gorilla Glass 3 | Super AMOLED capacitive touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 4.5 inches | 5.5 inches | 5.5 inches |
| Resolution | 540 x 960 pixels (245 ppi) | 720 x 1280 pixels (267 ppi) | 720 x 1280 pixels (267 ppi) |
| Screen-to-Body Ratio | 65.39% | 67.20% | 71.36% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | - | FM radio | - |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 8 MP, 3264 x 2448 pixels | 13 MP, 4160 x 3120 pixels | 13 MP, 4128 x 3096 pixels |
| Flash | LED flash | LED flash | LED flash |
| Features | Auto focus, Geo-tagging, Touch Focus, Face Detection, Panorama | Auto focus, Geo-tagging, Touch Focus, Face Detection, Simultaneous HD Video And Image Recording, HDR | Auto focus, Geo-tagging, Touch Focus, Face Detection, Panorama |
| Video | - | 1080p@30fps, 720p@60fps | 1080p@30fps |
| Front Camera | 5 MP [Similar] | 8 MP, 1080p [Similar] | 5 MP [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 | HSPA 42.2/5.76 Mbps, LTE | HSPA 42.2/5.76 Mbps |
| Bluetooth | v4.0, A2DP, EDR, LE | v4.0, A2DP, apt-X | v4.0, A2DP |
| 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, DLNA, hotspot | Yes |
| USB | microUSB v2.0 | microUSB v2.0 | microUSB v2.0 |
| GPS | Yes, with A-GPS, GLONASS | Yes, with A-GPS, GLONASS | Yes, with A-GPS, GLONASS |
| Browser | HTML5 | HTML5 | HTML5 |
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| Internal | 16 GB, 1 GB RAM | 16 GB, 1 GB RAM | 16 GB, 2 GB RAM |
| Expandable Storage | No | microSD, up to 128 GB | microSD, up to 128 GB |
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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-Po Battery | Non-removable Li-Ion Battery |
| Capacity | 1900 mAh | 2600 mAh | 2950 mAh |
| Stand by | - | - | - |
| Talk Time | - | - | Up to 19 h (3G) |
