Phone Comparison - Samsung Galaxy Axiom R830 vs Xiaomi Mi 3 vs Xiaomi Mi 4
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| Manufacturer | Samsung | Xiaomi | Xiaomi |
| Announced | November 2012 | September 2013 | July 2014 |
| Status | Released - November 2012 | Available - December 2013 | Available - Q3 2014 |
| Colors | Blue | Various | Black, White |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
121.7 x 63.8 x 11.9 mm (4.79 x 2.51 x 0.47 in) |
144 x 73.6 x 8.1 mm (5.67 x 2.9 x 0.32 in) |
139.2 x 68.5 x 8.9 mm (5.48 x 2.7 x 0.35 in) |
| Weight | 136.1 g (4.8.0.04 oz) | 145 g (5.11 oz) | 149 g (5.26 oz) |
| 2G Network | CDMA 800 / 1700 / 1900 / 2100 | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 |
| 3G Network | CDMA2000 1xEV-DO | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 |
| 4G Network | LTE 700 MHz Class 17 / 850 / 1700 / 1900 / 2100 | - | LTE |
| Messaging | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, EMail, IM | SMS, MMS, EMail, IM |
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| OS | Android OS, v4.0.4 (Ice Cream Sandwich) | Android OS, v4.4 (KitKat) optimized with MIUI version 5 | Android OS, v4.4.3 (KitKat) |
| Processor | Dual-core 1.2 GHz Krait, Qualcomm | Quad-core 2.3 GHz Krait 400, Qualcomm MSM8274AB Snapdragon 800 | Quad-core 2.5 GHz Krait 400, Qualcomm MSM8974AC Snapdragon 801 |
| GPU | - | Adreno 330 | Adreno 330 |
| RAM | 1 GB | 2 GB | 3 GB |
| Internal Memory | 4 GB ROM (1.85 GB user available) | 16/64 GB | 16/64 GB |
| External Memory | microSD, up to 32 GB | No | No |
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| Type | TFT capacitive touchscreen | IPS LCD capacitive touchscreen | IPS LCD capacitive touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 4.0 inches | 5.0 inches | 5.0 inches |
| Resolution | 480 x 800 pixels (233 ppi) | 1080 x 1920 pixels (441 ppi) | 1080 x 1920 pixels (441 ppi) |
| Screen-to-Body Ratio | 58.77% | 64.90% | 72.14% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | No | FM radio | FM radio |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 5 MP, 2592x1944 pixels | 13 MP, 4128 x 3096 pixels | 13 MP, 4128 x 3096 pixels |
| Flash | LED flash | dual-LED flash | Dual-LED Flash |
| Features | Auto focus, Geo-tagging, Touch Focus, Face Detection | Auto focus, Geo-tagging, Touch Focus, Face And Smile Detection, Image Stabilization, HDR | Auto focus, 1/3' Sensor Size, 1.12µm Pixel Size, Geo-tagging, Touch Focus, Face And Smile Detection, HDR |
| Video | Yes, 720p | 1080p@30fps, HDR | 2160p, 1080p@30fps, HDR |
| Front Camera | Yes, 1.3 MP [Similar] | 2 MP, 1080p@30fps [Similar] | 8 MP, 1080p@30fps [Similar] |
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| GPRS | No | Yes | Yes |
| Edge | No | Yes | Yes |
| 3G | EV-DO Rev. A, up to 3.1 Mbps; LTE | DC-HSDPA, 42 Mbps; HSDPA, 21 Mbps; HSUPA, 5.76 Mbps | DC-HSDPA, 42 Mbps; HSDPA, 21 Mbps; HSUPA, 5.76 Mbps; LTE |
| Bluetooth | Yes, v4.0 with A2DP | v4.0, A2DP | v4.0, A2DP |
| Wi-Fi | Wi-Fi 802.11 b/g/n, DLNA, Wi-Fi hotspot | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, Wi-Fi hotspot | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, DLNA, Wi-Fi hotspot |
| USB | Yes, microUSB v2.0 | microUSB v2.0 (MHL), USB On-the-go | microUSB v2.0 (MHL), USB On-the-go |
| GPS | Yes, with A-GPS support | Yes, with A-GPS, GLONASS | Yes, with A-GPS, GLONASS |
| Browser | HTML5 | HTML5 | HTML5 |
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| Internal | 4 GB ROM (1.85 GB user available), 1 GB RAM | 16/64 GB, 2 GB RAM | 16/64 GB, 3 GB RAM |
| Expandable Storage | microSD, up to 32 GB | 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 | Non-removable Li-Ion Battery | Non-removable Li-Ion Battery |
| Capacity | 2100 mAh | 3050 mAh | 3080 mAh |
| Stand by | Up to 252 h | Up to 500 h | - |
| Talk Time | Up to 8 h | Up to 4 h | - |
