Phone Comparison - Samsung Galaxy Alpha vs Asus Zenfone 2 ZE550ML vs Xiaomi Mi 4i
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| Manufacturer | Samsung | Asus | Xiaomi |
| Announced | August 2014 | March 2015 | April 2015 |
| Status | Available - September 2014 | Available - March 2015 | Available - April 2015 |
| Price | - | Rs. 13,990 ($205.74) [Similarly Priced] | Rs. 8,999 ($132.34) [Similarly Priced] |
| Colors | Black, white, gold, silver, blue | Red, Grey, Black, White and Gold | Black, White, Blue, Yellow, Pink |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
132.4 x 65.5 x 6.7 mm (5.21 x 2.58 x 0.26 in) |
152.5 x 77.2 x 10.9 mm (6 x 3.04 x 0.43 in) |
138.1 x 69.6 x 7.8 mm (5.44 x 2.74 x 0.31 in) |
| Weight | 115 g (4.06 oz) | 170 g (6 oz) | 130 g (4.59 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 850 / 900 / 1900 / 2100 |
| 4G Network | LTE | LTE 700/800/850/900/1700/1800/1900/2100/2600 (Bands 1, 2, 3, 4, 5, 7, 8, 9, 17, 18, 19, 20, 28, 29) |
LTE |
| Messaging | SMS, MMS, EMail, IM | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, EMail, IM |
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| OS | Android OS, v4.4.4 (KitKat) | Android OS, v5.0 (Lollipop) | Android OS, v5.0 (Lollipop) |
| Processor | Quad-core 1.8 GHz Cortex-A15 & quad-core 1.3 GHz Cortex-A7, Exynos 5 Octa 5430 | Quad-core 1.8 GHz, Intel Atom Z3560 | Quad-core 1.7 GHz Cortex-A53 & quad-core 1.0 GHz Cortex-A53, Qualcomm MSM8939 Snapdragon 615 |
| GPU | Mali-T628 MP6 | PowerVR G6430 | Adreno 405 |
| RAM | 2 GB | 2 GB | 2 GB |
| Internal Memory | 32 GB | 16 GB | 16/32 GB |
| External Memory | No | microSD, up to 64 GB | No |
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| Type | Super AMOLED capacitive touchscreen | IPS Capacitive Touchscreen, Corning Gorilla Glass 3 | IPS LCD capacitive touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 4.7 inches | 5.5 inches | 5.0 inches |
| Resolution | 720 x 1280 pixels (320 ppi) | 1080 x 1920 pixels (403 ppi) | 1080 x 1920 pixels (441 ppi) |
| Screen-to-Body Ratio | 66.95% | 69.97% | 71.57% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | No | Yes | FM radio |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 12 MP, 4128 x 3096 pixels | 13 MP, 4128 x 3096 pixels | 13 MP, 4128 x 3096 pixels |
| Flash | LED flash | dual-LED (dual tone) | LED flash |
| Features | Auto focus, Geo-tagging, Touch Focus, Face And Smile Detection, Panorama, HDR | Auto focus, Geo-tagging, Touch Focus, Face Detection, Panorama, HDR | Auto focus, Geo-tagging, Touch Focus, Face/smile Detection, Panorama, HDR |
| Video | 2160p@30fps | 1080p@30fps | 1080p@30fps |
| Front Camera | 2.1 MP [Similar] | 5 MP [Similar] | 5 MP [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSDPA, 42 Mbps, HSUPA; LTE-A, Cat6, 300 Mbps DL | HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps | HSPA, LTE |
| Bluetooth | v4.0, A2DP, EDR, LE | v4.0, A2DP, EDR | v4.0, A2DP |
| Wi-Fi | 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/ac, Wi-Fi Direct, hotspot | Wi-Fi 802.11 a/b/g/n, dual-band, hotspot |
| USB | microUSB v2.0 | microUSB v2.0, USB Host | 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 | 32 GB, 2 GB RAM | 16 GB, 2 GB RAM | 16/32 GB, 2 GB RAM |
| Expandable Storage | No | microSD, up to 64 GB | No |
| 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-Po Battery | Li-Po Battery |
| Capacity | 1860 mAh | 3000 mAh | 3120 mAh |
| Stand by | - | - | - |
| Talk Time | - | - | - |
