Phone Comparison - Samsung I9100 Galaxy S II vs Samsung Galaxy Alpha vs Motorola Moto X (Gen 2)
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| Manufacturer | Samsung | Samsung | Motorola |
| Announced | February 2011 | August 2014 | September 2014 |
| Status | Available - April 2011 | Available - September 2014 | Available - September 2014 |
| Colors | Black, White, Pink | Black, white, gold, silver, blue | Black, White |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
125.3 x 66.1 x 8.5 mm (4.93 x 2.6 x 0.33 in) |
132.4 x 65.5 x 6.7 mm (5.21 x 2.58 x 0.26 in) |
140.8 x 72.4 x 9.97 mm (5.54 x 2.85 x 0.39 in) |
| Weight | 116 g (4.09 oz) | 115 g (4.06 oz) | 144 g (5.08 oz) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 - All Versions |
| 3G Network | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 - for AT&T HSDPA 850 / 900 / 1900 / 2100 - for Europe HSDPA 850 / 900 / 1700 / 1900 / 2100 - for T-Mobile |
| 4G Network | - | 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, v4.4.4 (KitKat) |
| Processor | Dual-core 1.2GHz ARM Cortex-A9 processor, Exynos chipset | Quad-core 1.8 GHz Cortex-A15 & quad-core 1.3 GHz Cortex-A7, Exynos 5 Octa 5430 | Quad-core 2.5 GHz Krait 400, Qualcomm MSM8974-AC Snapdragon 801 |
| GPU | Mali-400MP | Mali-T628 MP6 | Adreno 330 |
| RAM | 1 GB | 2 GB | 2 GB |
| Internal Memory | 16 GB/32 GB storage | 32 GB | 16/32 GB |
| External Memory | microSD, up to 32GB, 8 GB included | No | No |
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| Type | Super AMOLED Plus capacitive touchscreen | Super AMOLED capacitive touchscreen | AMOLED Capacitive Touchscreen, Corning Gorilla Glass 3 |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 4.3 inches | 4.7 inches | 5.2 inches |
| Resolution | 480 x 800 pixels (217 ppi) | 720 x 1280 pixels (320 ppi) | 1080 x 1920 pixels (424 ppi) |
| Screen-to-Body Ratio | 63.52% | 66.95% | 73.00% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | Stereo FM radio with RDS | No | No |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 8 MP, 3264x2448 pixels | 12 MP, 4128 x 3096 pixels | 13 MP, 4128 x 3096 pixels |
| Flash | LED flash | LED flash | Dual-LED Flash |
| Features | Auto focus, Geo-tagging, Touch Focus, Face And Smile Detection, Image Stabilization | Auto focus, Geo-tagging, Touch Focus, Face And Smile Detection, Panorama, HDR | Auto-focus, Geo-tagging, Face Detection, Image Stabilization, HDR |
| Video | Yes, 1080p@30fps | 2160p@30fps | Yes, 2160p@30fps, HDR |
| Front Camera | Yes, 2 MP [Similar] | 2.1 MP [Similar] | Yes, 2 MP, 1080p@30fps [Similar] |
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| GPRS | Class 12 (4+1/3+2/2+3/1+4 slots), 32 - 48 kbps | Yes | Class 12 (4+1/3+2/2+3/1+4 slots), 32 - 48 kbps |
| Edge | Class 12 | Yes | Class 12 |
| 3G | HSDPA, 21 Mbps; HSUPA, 5.76 Mbps | HSDPA, 42 Mbps, HSUPA; LTE-A, Cat6, 300 Mbps DL | HSDPA, 42 Mbps; HSUPA, 5.76 Mbps; LTE, Cat3, 50 Mbps UL, 100 Mbps DL |
| Bluetooth | Yes, v3.0+HS | v4.0, A2DP, EDR, LE | Yes, v4.0 with 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/ac, dual-band, Wi-Fi Direct, DLNA, Wi-Fi hotspot | Wi-Fi 802.11 a/b/g/n, dual-band, Wi-Fi Direct, DLNA, Wi-Fi hotspot |
| USB | Yes, v2.0 microUSB (MHL), USB On-the-go | microUSB v2.0 | Yes, microUSB v2.0 (MHL), USB Host |
| GPS | Yes, with A-GPS support | Yes, with A-GPS, GLONASS | Yes, with A-GPS support and GLONASS |
| Browser | HTML | HTML5 | HTML5 |
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| Internal | 16GB/32GB storage, 1 GB RAM | 32 GB, 2 GB RAM | 16/32 GB, 2 GB RAM |
| Expandable Storage | microSD, up to 32GB, 8 GB included | No | No |
| 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 | Li-Ion Battery | Non-removable Li-Ion Battery |
| Capacity | 1650 mAh | 1860 mAh | 2300 mAh |
| Stand by | Up to 710 h (2G) Up to 610 h (3G) |
- | - |
| Talk Time | Up to 18 h 20 min (2G) Up to 8 h 40 min (3G) |
- | - |
