Phone Comparison - Samsung Galaxy Ace 4 vs HTC Desire 820 vs Samsung Galaxy A3
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| Manufacturer | Samsung | HTC | Samsung |
| Announced | June 2014 | September 2014 | October 2014 |
| Status | Available - July 2014 | Coming Soon - September 2014 | Available - November 2014 |
| Price | - | - | Rs. 14,265 ($209.78) [Similarly Priced] |
| Colors | Iris Charcoal, Classic White | Marble White, Tuxedo Grey, Santorini White, Milky-way Grey, Tang | Pearl White, Midnight Black, Platinum Silver, Soft Pink, Light B |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
121.4 x 62.9 x 10.8 mm (4.78 x 2.48 x 0.43 in) |
157.7 x 78.7 x 7.7 mm (6.21 x 3.1 x 0.3 in) |
130.1 x 65.5 x 6.9 mm ( 5.12 x 2.58 x 0.27 in) |
| Weight | 123.8 g (4.34.0.28 oz) | 155 g (5.47 oz) | 110.3 g (3.88.0.11 oz) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 |
| 3G Network | HSDPA 900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 - EMEA version HSDPA 900 / 2100 - Asia version |
HSDPA 850 / 1900 / 2100 |
| 4G Network | - | LTE 900 / 1800 / 2100 / 2600 - EMEA version | LTE |
| Messaging | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, Push Mail, EMail | SMS, MMS, Push Mail, EMail, IM |
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| OS | Android OS, v4.4.2 (KitKat) | Android OS, v4.4.2 (KitKat) | Android OS, v4.4.2 (KitKat) |
| Processor | Dual-core 1.0 GHz | Quad-core 1.5 GHz Cortex-A53 & quad-core 1.0 GHz Cortex-A53, Qualcomm MSM8939 Snapdragon 615 | Quad-core 1.2 GHz |
| GPU | - | Adreno 405 | - |
| RAM | 512 MB | 2 GB | 1 GB |
| Internal Memory | 4 GB | 16 GB | 16 GB |
| External Memory | microSD, up to 64 GB | microSD, up to 128 GB | microSD, up to 64 GB |
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| Type | TFT capacitive touchscreen | LCD Capacitive Touchscreen | Super AMOLED Capacitive Touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 4.0 inches | 5.5 inches | 4.5 inches |
| Resolution | 480 x 800 pixels (233 ppi) | 720 x 1280 pixels (267 ppi) | 540 x 960 pixels (245 ppi) |
| Screen-to-Body Ratio | 59.76% | 67.20% | 65.39% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | FM radio | No | - |
| 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 | 8 MP, 3264x2448 pixels |
| Flash | LED flash | LED flash | LED flash |
| Features | Auto focus, Geo-tagging, Face And Smile Detection, Panorama | Auto focus, Geo-tagging, Touch Focus, Face Detection, Simultaneous HD Video And Image Recording, HDR | Auto focus, Geo-tagging, Face Detection, Panorama, HDR, Wide Selfie, Rear-cam Selfie |
| Video | Yes, 720p@30fps | 1080p@30fps, 720p@60fps | 1080p@30fps |
| Front Camera | Yes, VGA [Similar] | 8 MP, 1080p [Similar] | 5 MP [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSDPA, 21 Mbps; HSUPA, 5.76 Mbps | HSDPA, 42 Mbps; HSUPA, 5.8 Mbps; LTE, Cat4, 50 Mbps UL, 150 Mbps DL | HSDPA, 42 Mbps; HSUPA, 5.8 Mbps; LTE, Cat4, 50 Mbps UL, 150 Mbps DL |
| Bluetooth | Yes, v4.0 with A2DP | v4.0, A2DP | v4.0, BLE, ANT+ |
| Wi-Fi | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, Wi-Fi hotspot | Wi-Fi 802.11 a/b/g/n, dual-band, Wi-Fi Direct, DLNA, Wi-Fi hotspot | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi 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 |
| Browser | HTML5 | HTML5 | HTML5 |
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| Internal | 4 GB, 512 MB RAM | 16 GB, 2 GB RAM | 16 GB, 1 GB RAM |
| Expandable Storage | microSD, up to 64 GB | microSD, up to 128 GB | microSD, up to 64 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 | Li-Ion Battery | Non-removable Li-Po Battery | Non-removable Li-Po Battery |
| Capacity | 1500 mAh | 2600 mAh | 1900 mAh |
| Stand by | - | Up to 424 h (3G) | - |
| Talk Time | - | Up to 22 h 24 min (3G) | - |
