Phone Comparison - Nokia Lumia 820 vs Huawei Ascend G510 vs Nokia Lumia 525
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| Manufacturer | Nokia | Huawei | Nokia |
| Announced | Expected September 2012 | January 2013 | November 2013 |
| Status | Available - November 2012 | Available - April 2013 | Available - January 2014 |
| Colors | Black, Gray, Red, Yellow, White, Blue, Violet | Black | Yellow, orange, 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) |
134 x 64.7 x 9.9 mm (5.28 x 2.55 x 0.39 in) |
119.9 x 64 x 9.9 mm (4.72 x 2.52 x 0.39 in) |
| Weight | 160 g (5.64 oz) | 150 g (5.29 oz) | 124 g (4.37 oz) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 |
| 3G Network | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 900 / 2100 | HSDPA 900 / 2100 HSDPA 850 / 1900 / 2100 |
| 4G Network | LTE 800 / 1800 / 2600 / 2100/ 900 | - | - |
| Messaging | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, EMail, IM | SMS, MMS, Push Mail, EMail, IM |
| Build Features | - | - | Super sensitive touch for finger nail and glove use, Changeable backcover |
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| OS | Microsoft Windows Phone 8 | Android OS, v4.1 (Jelly Bean) | Microsoft Windows Phone 8 |
| Processor | Dual-core 1.5 GHz Krait, Qualcomm MSM8960 Snapdragon | Dual-core 1.2 GHz Cortex-A9, Qualcomm MSM8225 Snapdragon | Dual-core 1 GHz, Qualcomm MSM8227 Snapdragon S4 |
| GPU | Adreno 225 | Adreno 203 | Adreno 305 |
| RAM | 1 GB | 512 MB | 1 GB |
| Internal Memory | 8 GB storage | 4 GB | 8 GB ROM |
| External Memory | microSD, up to 32 GB | microSD, up to 32 GB | microSD, up to 64 GB |
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| Type | AMOLED capacitive touchscreen | IPS LCD capacitive touchscreen | IPS LCD Capacitive Touchscreen, 2D Hardened Glass |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 4.3 inches | 4.5 inches | 4.0 inches |
| Resolution | 480 x 800 pixels (217 ppi) | 480 x 854 pixels (218 ppi) | 480 x 800 pixels (233 ppi) |
| Screen-to-Body Ratio | 62.04% | 64.19% | 59.47% |
| 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 | 8 MP, 3264x2448 pixels, Carl Zeiss Tessa | 5 MP, 2592x1940 pixels | 5 MP, 2592х1944 pixels |
| Flash | LED flash | LED flash | No |
| Features | Auto focus, Geo-tagging | Auto focus, Geo-tagging | Auto focus, Geo-tagging, Touch Focus, Face Detection, Nokia Smart Camera, Cinemagraph lens, Panorama lens, Bing vision |
| Video | Yes | Yes, 720p | Yes, 720p@30fps |
| Front Camera | Yes [Similar] | Yes, VGA [Similar] | No [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSDPA, 42 Mbps HSUPA, 5.76 Mbps LTE, Cat3, 50 Mbps UL, 100 Mbps DL |
HSPA | HSDPA, 21 Mbps; HSUPA, 5.76 Mbps |
| Bluetooth | Yes, v3.1 with A2DP, EDR | Yes, with A2DP, EDR | Yes, v4.0 with A2DP |
| Wi-Fi | Wi-Fi 802.11 b/g/n | Wi-Fi 802.11 b/g/n, Wi-Fi hotspot | Wi-Fi 802.11 b/g/n |
| USB | Yes, microUSB v2.0 | Yes, microUSB v2.0 | Yes, microUSB v2.0 |
| GPS | Yes, with A-GPS support | Yes, with A-GPS support | Yes, with A-GPS support and GLONASS |
| Browser | HTML5 | HTML | HTML5 |
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| Internal | 8 GB storage, 1 GB RAM | 4 GB, 512 MB RAM | 8 GB ROM, 1 GB RAM |
| Expandable Storage | microSD, up to 32 GB | microSD, up to 32 GB | microSD, up to 64 GB |
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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 | Li-Ion Battery |
| Capacity | 1650 mAh | 1700 mAh | 1430 mAh |
| Stand by | Up to 330 h (2G) Up to 330 h (3G) |
Up to 340 h | Up to 336 h |
| Talk Time | Up to 14 h (2G) Up to 8 h (3G) |
Up to 6 h | Up to 16 h 54 min (2G) Up to 10 h 36 min (3G) |
