Phone Comparison - Samsung I9100 Galaxy S II vs Samsung Galaxy A5 Duos vs HTC Desire 728 Dual Sim
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| Manufacturer | Samsung | Samsung | HTC |
| Announced | February 2011 | October 2014 | June 2015 |
| Status | Available - April 2011 | Available - November 2014 | Coming Soon - June 2015 |
| Price | - | Rs. 18,094 ($266.09) [Similarly Priced] | Rs. 12,999 ($191.16) [Similarly Priced] |
| Colors | Black, White, Pink | Pearl White, Midnight Black, Platinum Silver, Soft Pink, Light B | Gray, White, Blue, Pink |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
125.3 x 66.1 x 8.5 mm (4.93 x 2.6 x 0.33 in) |
139.3 x 69.7 x 6.7 mm (5.48 x 2.74 x 0.26 in) |
157.9 x 77.8 x 7.87 mm (6.22 x 3.06 x 0.31 in) |
| Weight | 116 g (4.09 oz) | 123 g (4.34 oz) | 153 g (5.4 oz) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 3G Network | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 900 / 1900 / 2100 |
| 4G Network | - | LTE | LTE |
| Messaging | SMS, MMS, IM | SMS, MMS, EMail, IM | SMS, MMS, EMail, IM |
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| OS | Android OS, v2.3 (Gingerbread), planned upgrade to v4.0 | Android OS, v4.4.4 (KitKat) | Android OS, v5.1 (Lollipop) |
| Processor | Dual-core 1.2GHz ARM Cortex-A9 processor, Exynos chipset | Quad-core 1.2 GHz Cortex-A53, Qualcomm MSM8916 Snapdragon 410 | Octa-core 1.3 GHz Cortex-A53, Mediatek MT6753 |
| GPU | Mali-400MP | Adreno 306 | Mali-T720MP3 |
| RAM | 1 GB | 2 GB | 2 GB |
| Internal Memory | 16 GB/32 GB storage | 16 GB | 16 GB |
| External Memory | microSD, up to 32GB, 8 GB included | No | microSD, up to 128 GB |
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| Type | Super AMOLED Plus capacitive touchscreen | Super AMOLED capacitive touchscreen | Super LCD2 Capacitive Touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 4.3 inches | 5.0 inches | 5.5 inches |
| Resolution | 480 x 800 pixels (217 ppi) | 720 x 1280 pixels (294 ppi) | 720 x 1280 pixels (267 ppi) |
| Screen-to-Body Ratio | 63.52% | 70.85% | 67.89% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | Stereo FM radio with RDS | - | FM Radio |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 8 MP, 3264x2448 pixels | 13 MP, 4128 x 3096 pixels | 13 MP, 4208 x 3120 pixels |
| Flash | LED flash | LED flash | LED Flash |
| Features | Auto focus, Geo-tagging, Touch Focus, Face And Smile Detection, Image Stabilization | Auto focus, Geo-tagging, Touch Focus, Face Detection, Panorama | Auto focus, BSI Sensor, Geo-tagging, Touch Focus, Face Detection, HDR, Panorama |
| Video | Yes, 1080p@30fps | 1080p@30fps | 1080p@30fps |
| Front Camera | Yes, 2 MP [Similar] | 5 MP [Similar] | 5 MP, 1080p, BSI Sensor [Similar] |
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| GPRS | Class 12 (4+1/3+2/2+3/1+4 slots), 32 - 48 kbps | Yes | Yes |
| Edge | Class 12 | Yes | Yes |
| 3G | HSDPA, 21 Mbps; HSUPA, 5.76 Mbps | HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps | HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps |
| Bluetooth | Yes, v3.0+HS | v4.0, A2DP, EDR, LE | v4.0, A2DP, LE |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n, DLNA, Wi-Fi Direct, Wi-Fi hotspot | Wi-Fi 802.11 a/b/g/n, dual-band, Wi-Fi hotspot | Wi-Fi 802.11 a/b/g/n, dual-band, Wi-Fi Direct, hotspot |
| USB | Yes, v2.0 microUSB (MHL), USB On-the-go | microUSB v2.0 | microUSB v2.0, USB Host |
| GPS | Yes, with A-GPS support | Yes, with A-GPS, GLONASS | Yes, with A-GPS, GLONASS |
| Browser | HTML | HTML5 | HTML5 |
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| Internal | 16GB/32GB storage, 1 GB RAM | 16 GB, 2 GB RAM | 16 GB, 2 GB RAM |
| Expandable Storage | microSD, up to 32GB, 8 GB included | No | microSD, up to 128 GB |
| USB OTG | 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 | Standard battery, Li-Ion | Non-removable Li-Ion Battery | Non-removable Li-Po Battery |
| Capacity | 1650 mAh | 2300 mAh | 2800 mAh |
| Stand by | Up to 710 h (2G) Up to 610 h (3G) |
- | Up to 485 h (3G) |
| Talk Time | Up to 18 h 20 min (2G) Up to 8 h 40 min (3G) |
- | Up to 21 h (3G) |
