Phone Comparison - Panasonic T31 vs Nokia Asha 502 Dual SIM vs Nokia Lumia 525
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| Manufacturer | Panasonic | Nokia | Nokia |
| Announced | October 2013 | October 2013 | November 2013 |
| Status | Available - November 2013 | Available - December 2013 | Available - January 2014 |
| Colors | Bluish Black, Pure White | Bright Red, Bright Green, Cyan, Yellow, White and Black | Yellow, orange, white, black |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
122 x 64.4 x 11.95 mm (4.8 x 2.54 x 0.47 in) |
99.6 x 59.5 x 11.1 mm (3.92 x 2.34 x 0.44 in) |
119.9 x 64 x 9.9 mm (4.72 x 2.52 x 0.39 in) |
| Weight | 120 g (4.23 oz) | 100 g (3.53 oz) | 124 g (4.37 oz) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 900 / 1800 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 |
| 3G Network | HSDPA 850 / 1900 / 2100 | No | HSDPA 900 / 2100 HSDPA 850 / 1900 / 2100 |
| Messaging | SMS, MMS, 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 | Android OS, v4.2.2 (Jelly Bean) with FOTA upgrade | Nokia Asha software platform 1.1 | Microsoft Windows Phone 8 |
| Processor | Dual-core 1.3 GHz, MTK 6572 | - | Dual-core 1 GHz, Qualcomm MSM8227 Snapdragon S4 |
| GPU | Mali-400 | - | Adreno 305 |
| RAM | 512 MB | 64 MB | 1 GB |
| Internal Memory | 4 GB (1.9 GB user memory) | N/A | 8 GB ROM |
| External Memory | microSD, up to 32 GB | microSD, up to 32 GB, 4 GB card included | microSD, up to 64 GB |
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| Type | TFT capacitive touchscreen | TFT capacitive touchscreen | IPS LCD Capacitive Touchscreen, 2D Hardened Glass |
| Colors | 16M colors | 256K colors | 16M colors |
| Size | 4.0 inches | 3.0 inches | 4.0 inches |
| Resolution | 480 x 800 pixels (233 ppi) | 240 x 320 pixels (133 ppi) | 480 x 800 pixels (233 ppi) |
| Screen-to-Body Ratio | 58.08% | 47.27% | 59.47% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | FM Radio with Recording | Stereo FM radio | FM Radio |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 3.2 MP, 2048x1536 pixels | 5 MP, 2592x1944 pixels | 5 MP, 2592х1944 pixels |
| Flash | No | LED flash | No |
| Features | Fixed Focus, Geo-tagging | Fixed Focus, Auto and Manual White Balance, Full Screen Viewfinder, Capture Modes, Scene Modes, Color Tone Modes, Image Editor | Auto focus, Geo-tagging, Touch Focus, Face Detection, Nokia Smart Camera, Cinemagraph lens, Panorama lens, Bing vision |
| Video | Yes, VGA@30fps | Yes, QVGA@15fps | Yes, 720p@30fps |
| Front Camera | Yes, VGA [Similar] | No [Similar] | No [Similar] |
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| GPRS | Yes | Up to 85.6 kbps | Yes |
| Edge | Yes | Up to 236.8 kbps | Yes |
| 3G | HSDPA, 21 Mbps; HSUPA, 5.76 Mbps | N/A | HSDPA, 21 Mbps; HSUPA, 5.76 Mbps |
| Bluetooth | Yes, v4.0 with A2DP | Yes, v3.0 with EDR | Yes, v4.0 with A2DP |
| Wi-Fi | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, Wi-Fi hotspot | Wi-Fi 802.11 b/g/n | 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 | No | Yes, with A-GPS support and GLONASS |
| Browser | HTML5 | WAP 2.0/xHTML, HTML | HTML5 |
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| Internal | 4 GB (1.9 GB user memory), 512 MB RAM | 64 MB RAM | 8 GB ROM, 1 GB RAM |
| Expandable Storage | microSD, up to 32 GB | microSD, up to 32 GB, 4 GB card included | 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 | Li-Ion Battery | Li-Ion Battery (BL-5A) | Li-Ion Battery |
| Capacity | 1300 mAh | 1010 mAh | 1430 mAh |
| Stand by | Up to 510 h (2G) Up to 400 h (3G) |
Up to 576 h | Up to 336 h |
| Talk Time | Up to 3 h 30 min (2G) Up to 9 h 30 min (3G) |
Up to 13 h 42 min | Up to 16 h 54 min (2G) Up to 10 h 36 min (3G) |
