Phone Comparison - Nokia Lumia 820 vs Sony Xperia U vs Nokia Lumia 620
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| Manufacturer | Nokia | Sony | Nokia |
| Announced | Expected September 2012 | February 2012 | December 2012 |
| Status | Available - November 2012 | Available - May 2012 | Available - January 2013 |
| Colors | Black, Gray, Red, Yellow, White, Blue, Violet | Black, White/ exchangeable bottom caps in white, black, pink, ye | Lime green, orange, magenta, yellow, cyan, white, black |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
123.8 x 68.5 x 9.9 mm (4.87 x 2.7 x 0.39 in) |
112 x 54 x 12 mm (4.41 x 2.13 x 0.47 in) |
115.4 x 61.1 x 11 mm (4.54 x 2.41 x 0.43 in) |
| Weight | 160 g (5.64 oz) | 110 g (3.88 oz) | 127 g (4.48 oz) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 |
| 3G Network | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 900 / 2100 - ST25iHSDPA 850 / 1900 / 2100 - ST25a | HSDPA 850 / 900 / 1900 / 2100 |
| 4G Network | LTE 800 / 1800 / 2600 / 2100/ 900 | - | - |
| Messaging | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, Push Mail, EMail, IM |
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| OS | Microsoft Windows Phone 8 | Android OS, v2.3 (Gingerbread), upgradable to v4.0 | Microsoft Windows Phone 8 |
| Processor | Dual-core 1.5 GHz Krait, Qualcomm MSM8960 Snapdragon | Dual-core 1 GHz Cortex-A9, STE U8500 | Dual-core 1 GHz Krait, Qualcomm Snapdragon S4 |
| GPU | Adreno 225 | Mali-400MP | Adreno 305 |
| RAM | 1 GB | 512 MB | 512 MB |
| Internal Memory | 8 GB storage | 8 GB (4 GB user-accessible) | 8 GB storage |
| External Memory | microSD, up to 32 GB | No | microSD, up to 64 GB |
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| Type | AMOLED capacitive touchscreen | LED-backlit LCD, capacitive touchscreen | TFT capacitive touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 4.3 inches | 3.5 inches | 3.8 inches |
| Resolution | 480 x 800 pixels (217 ppi) | 480 x 854 pixels (280 ppi) | 480 x 800 pixels (246 ppi) |
| Screen-to-Body Ratio | 62.04% | 55.77% | 58.06% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | No | Stereo FM radio with RDS | No |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 8 MP, 3264x2448 pixels, Carl Zeiss Tessa | 5 MP, 2592 x 1944 pixels | 5 MP, 2592х1936 pixels |
| Flash | LED flash | LED flash | LED flash |
| Features | Auto focus, Geo-tagging | Auto focus, Geo-tagging, Touch Focus, Face And Smile Detection, 3D Sweep Panorama, Image Stabilization | Auto focus, Geo-tagging |
| Video | Yes | Yes, 720p@30fps, video light | Yes, 720p@30fps |
| Front Camera | Yes [Similar] | Yes, VGA [Similar] | Yes, VGA [Similar] |
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| GPRS | Yes | Up to 107 kbps | Class B |
| Edge | Yes | Up to 296 kbps | Class B |
| 3G | HSDPA, 42 Mbps HSUPA, 5.76 Mbps LTE, Cat3, 50 Mbps UL, 100 Mbps DL |
HSDPA 14.4 Mbps, HSUPA 5.76 Mbps | HSDPA, 21 Mbps; HSUPA, 5.76 Mbps |
| Bluetooth | Yes, v3.1 with A2DP, EDR | Yes, v2.1 with A2DP, EDR | Yes, v3.0 with A2DP, EDR |
| Wi-Fi | Wi-Fi 802.11 b/g/n | Wi-Fi 802.11 b/g/n, Wi-Fi hotspot, DLNA | Wi-Fi 802.11 a/b/g/n, dual-band |
| USB | Yes, microUSB v2.0 | Yes, microUSB v2.0, USB On-the-go support | Yes, microUSB v2.0 |
| GPS | Yes, with A-GPS support | Yes, with A-GPS support | Yes, with A-GPS support and GLONASS |
| Browser | HTML5 | HTML5, Adobe Flash | HTML5 |
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| Internal | 8 GB storage, 1 GB RAM | 8 GB (4 GB user-accessible), 512 MB RAM | 8 GB storage, 512 MB RAM |
| Expandable Storage | microSD, up to 32 GB | No | 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-Ion | Standard battery, Li-Ion | Standard battery, Li-Ion |
| Capacity | 1650 mAh | 1320 mAh | 1300 mAh (BL-4J) |
| Stand by | Up to 330 h (2G) Up to 330 h (3G) |
Up to 260 h (2G) Up to 472 h (3G) |
Up to 330 h |
| Talk Time | Up to 14 h (2G) Up to 8 h (3G) |
Up to 6 h 36 min (2G) Up to 5 h 36 min (3G) |
Up to 14 h 40 min (2G) Up to 9 h 50 min (3G) |
