Phone Comparison - Apple iPhone 4 vs Nokia Lumia 625 vs Xiaomi Redmi Note 4G
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| Manufacturer | Apple | Nokia | Xiaomi |
| Announced | June 2010 | July 2013 | August 2014 |
| Status | Available - June 2010 | Available - August 2013 | Available - November 2014 |
| Colors | Black, White | Orange, Bright green, Yellow, Black and white | Black/White |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
115.2 x 58.6 x 9.3 mm (4.54 x 2.31 x 0.37 in) |
133.2 x 72.2 x 9.2 mm (5.24 x 2.84 x 0.36 in) |
154 x 78.7 x 9.5 mm (6.06 x 3.1 x 0.37 in) |
| Weight | 137 g (4.83 oz) | 159 g (5.61 oz) | 199 g (7.02 oz) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 | GSM 900 / 1800 / 1900 |
| 3G Network | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 850 / 900 / 2100 HSDPA | TD-SCDMA 1900 / 2000 |
| 4G Network | - | LTE | TD-LTE 1900 / 2300 / 2600 |
| Messaging | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, EMail, IM |
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| OS | iOS 4, upgradable to iOS 5 | Microsoft Windows Phone 8 | Android OS, v4.2 (Jelly Bean) |
| Processor | 1 GHz Cortex-A8, Apple A4 | Dual-core 1.2 GHz Krait, Qualcomm MSM8930 Snapdragon | Quad-core 1.6 GHz Cortex-A7, Qualcomm MSM8928 Snapdragon 400 |
| GPU | PowerVR SGX535 | Adreno 305 | Adreno 305 |
| RAM | 512 MB | 512 MB | 2 GB |
| Internal Memory | 8/16/32 GB storage | 8 GB | 8 GB |
| External Memory | No | microSD, up to 64 GB | microSD, up to 64 GB |
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| Type | LED-backlit IPS TFT, capacitive touchscreen | IPS LCD Capacitive Touchscreen, Corning Gorilla Glass 2 | IPS LCD capacitive touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 3.5 inches | 4.7 inches | 5.5 inches |
| Resolution | 640 x 960 pixels (330 ppi) | 480 x 800 pixels (199 ppi) | 720 x 1280 pixels (267 ppi) |
| Screen-to-Body Ratio | 53.92% | 65.05% | 68.82% |
| 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 | 5 MP, 2592 x 1944 pixels | 5 MP, 2592х1936 pixels | 13 MP, 4128 x 3096 pixels |
| Flash | LED flash | LED flash | LED flash |
| Features | Auto focus, Touch Focus, Geo-tagging, HDR | Auto focus, Touch focus, Landscape orientation, Auto and manual exposure, Auto and manual white balance, Active toolbar, Full screen viewfinder, Geotagging | Auto focus, Geo-tagging, Touch Focus, Face And Smile Detection, HDR |
| Video | Yes, 720p@30fps, LED video light, geo-tagging | Yes, 1080p@30fps | 1080p@30fps |
| Front Camera | Yes, videocalling over Wi-Fi only [Similar] | Yes, VGA [Similar] | 5 MP [Similar] |
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| GPRS | Class 10 (4+1/3+2 slots), 32 - 48 kbps | Yes | Yes |
| Edge | Class 10, 236.8 kbps | Yes | Yes |
| 3G | HSDPA, 7.2 Mbps; HSUPA, 5.76 Mbps | HSDPA, 42.2 Mbps; HSUPA, 5.76 Mbps; LTE, Cat3, 50 Mbps UL, 100 Mbps DL | TD-SCDMA; LTE |
| Bluetooth | Yes, v2.1 with A2DP | Yes, v4.0 with A2DP, LE | v4.0, A2DP, LE |
| Wi-Fi | Wi-Fi 802.11 b/g/n, Wi-Fi hotspot | Wi-Fi 802.11 b/g/n, Wi-Fi hotspot | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, Wi-Fi hotspot |
| USB | Yes, v2.0 | Yes, microUSB v2.0 | microUSB v2.0, USB On-the-go |
| GPS | Yes, with A-GPS support | Yes, with A-GPS support and GLONASS | Yes, with A-GPS, GLONASS |
| Browser | HTML (Safari) | HTML5 | HTML5 |
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| Internal | 8/16/32 GB storage, 512 MB RAM | 8 GB, 512 MB RAM | 8 GB, 2 GB RAM |
| Expandable Storage | No | microSD, up to 64 GB | microSD, up to 64 GB |
| 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 | Standard battery, Li-Po | Non-removable Li-Ion Battery | Li-Po Battery |
| Capacity | 1420 mAh | 2000 mAh | 3200 mAh |
| Stand by | Up to 300 h (2G) Up to 300 h (3G) |
Up to 552 h | Up to 775 h (3G) |
| Talk Time | Up to 14 h (2G) Up to 7 h (3G) |
Up to 23 h 54 min (2G) Up to 15 h 12 min (3G) |
Up to 38 h (2G) Up to 14 h (3G) |
