Phone Comparison - Samsung Galaxy Ace Duos vs Nokia Lumia 520 vs Nokia Lumia 625
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| Manufacturer | Samsung | Nokia | Nokia |
| Announced | May 2012 | February 2013 | July 2013 |
| Status | Available - June 2012 | Available - April 2013 | Available - August 2013 |
| Colors | Black | Yellow, red, cyan, white/black | Orange, Bright green, Yellow, Black and white |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
112.7 x 61.5 x 11.5 mm (4.44 x 2.42 x 0.45 in) |
119.9 x 64 x 9.9 mm (4.72 x 2.52 x 0.39 in) |
133.2 x 72.2 x 9.2 mm (5.24 x 2.84 x 0.36 in) |
| Weight | 122 g (4.3 oz) | 124 g (4.37 oz) | 159 g (5.61 oz) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900 |
GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 |
| 3G Network | HSDPA 900 / 2100 | HSDPA 900 / 2100 HSDPA 850 / 1900 / 2100 |
HSDPA 850 / 900 / 2100 HSDPA |
| 4G Network | - | - | LTE |
| Messaging | SMS, MMS | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, Push Mail, EMail, IM |
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| OS | Android OS, v2.3 (Gingerbread) | Microsoft Windows Phone 8 | Microsoft Windows Phone 8 |
| Processor | 832 MHz | Dual-core 1 GHz, Qualcomm MSM8227 Snapdragon S4 | Dual-core 1.2 GHz Krait, Qualcomm MSM8930 Snapdragon |
| GPU | Adreno 305 | Adreno 305 | |
| RAM | N/A | 512 MB | 512 MB |
| Internal Memory | 3 GB storage, 512 MB | 8 GB storage | 8 GB |
| External Memory | microSD, up to 32 GB | microSD, up to 64 GB | microSD, up to 64 GB |
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| Type | TFT capacitive touchscreen | IPS LCD capacitive touchscreen | IPS LCD Capacitive Touchscreen, Corning Gorilla Glass 2 |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 3.5 inches | 4.0 inches | 4.7 inches |
| Resolution | 320 x 480 pixels (165 ppi) | 480 x 800 pixels (233 ppi) | 480 x 800 pixels (199 ppi) |
| Screen-to-Body Ratio | 52.52% | 59.47% | 65.05% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | Stereo FM radio with RDS | FM Radio | Yes |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 5 MP, 2592x1944 pixels | 5 MP, 2592х1944 pixels | 5 MP, 2592х1936 pixels |
| Flash | No | No | LED flash |
| Features | Auto focus, Geo-tagging | Auto focus, Geo-tagging | Auto focus, Touch focus, Landscape orientation, Auto and manual exposure, Auto and manual white balance, Active toolbar, Full screen viewfinder, Geotagging |
| Video | Yes | Yes, 720p@30fps | Yes, 1080p@30fps |
| Front Camera | No [Similar] | No [Similar] | Yes, VGA [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSDPA, 7.2 Mbps | HSDPA, 21 Mbps; HSUPA, 5.76 Mbps | HSDPA, 42.2 Mbps; HSUPA, 5.76 Mbps; LTE, Cat3, 50 Mbps UL, 100 Mbps DL |
| Bluetooth | Yes, v3.0 with A2DP | Yes, v4.0 with A2DP | Yes, v4.0 with A2DP, LE |
| Wi-Fi | Wi-Fi 802.11 b/g/n, Wi-Fi hotspot | Wi-Fi 802.11 b/g/n | Wi-Fi 802.11 b/g/n, Wi-Fi hotspot |
| USB | Yes, microUSB v2.0 | Yes, microUSB v2.0 | Yes, microUSB v2.0 |
| GPS | Yes, with A-GPS support | Yes, with A-GPS support and GLONASS | Yes, with A-GPS support and GLONASS |
| Browser | HTML | HTML5 | HTML5 |
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| Internal | 3GB storage, 512 MB | 8 GB storage, 512 MB RAM | 8 GB, 512 MB RAM |
| Expandable Storage | microSD, up to 32 GB | microSD, up to 64 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 | Non-removable Li-Ion Battery |
| Capacity | 1300 mAh | 1430 mAh | 2000 mAh |
| Stand by | Up to 520 h (2G) Up to 410 h (3G) |
Up to 384 h (3G) Up to 360 h (3G) |
Up to 552 h |
| Talk Time | Up to 6 h 30 min (2G) Up to 16 h 40 min (3G) |
Up to 17 h 24 min (2G) Up to 9 h 42 min (3G) |
Up to 23 h 54 min (2G) Up to 15 h 12 min (3G) |
