Phone Comparison - Lenovo K900 vs Panasonic P51 vs Lenovo P780
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| Manufacturer | Lenovo | Panasonic | Lenovo |
| Announced | January 2013 | May 2013 | June 2013 |
| Status | Available - April 2013 | Available - May 2013 | Available - June 2013 |
| Colors | Black | Black, White | Black |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
157 x 78 x 6.9 mm (6.18 x 3.07 x 0.27 in) |
144 x 75 x 8.5 mm (5.67 x 2.95 x 0.33 in) |
143 x 73 x 10 mm (5.63 x 2.87 x 0.39 in) |
| Weight | 162 g (5.71 oz) | 135 g (4.76 oz) | 176 g (6.21 oz) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 3G Network | HSDPA 2100 | HSDPA 900 / 2100 | HSDPA 900 / 2100 |
| Messaging | SMS, MMS, EMail, IM | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, EMail, IM |
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| OS | Android OS, v4.2 (Jelly Bean) | Android OS, v4.2 (Jelly Bean) | Android OS, v4.2 (Jelly Bean) |
| Processor | Dual-core 2.0 GHz, Intel Atom Z2580 | Quad-core 1.2 GHz Cortex-A7, MTK MT6589 | Quad-core 1.2 GHz Cortex-A7, MTK 6589 |
| GPU | PowerVR SGX544 | PowerVR SGX544 | PowerVR SGX544 |
| RAM | 2 GB | 1 GB | 1 GB |
| Internal Memory | 16 GB | 4 GB storage | 4 GB |
| External Memory | microSD, up to 32 GB | microSD, up to 32 GB | microSD, up to 32 GB |
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| Type | IPS LCD capacitive touchscreen | IPS LCD capacitive touchscreen | IPS LCD capacitive touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 5.5 inches | 5.0 inches | 5.0 inches |
| Resolution | 1080 x 1920 pixels (401 ppi) | 720 x 1280 pixels (294 ppi) | 720 x 1280 pixels (294 ppi) |
| Screen-to-Body Ratio | 67.94% | 63.69% | 65.90% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | Stereo FM radio | FM radio | FM radio |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 13 MP, autofocus | 8 MP, 3264 x 2448 pixels | 8 MP, 3264 x 2448 pixels |
| Flash | dual-LED flash | LED flash | LED flash |
| Features | Geo-tagging, Touch Focus, Face Detection | Auto focus, Geo-tagging, Touch Focus, Face Detection | Auto focus, Geo-tagging, Touch Focus, Face Detection |
| Video | Yes, 1080p@30fps | Yes, 1080p | Yes |
| Front Camera | Yes, 2 MP [Similar] | Yes, 1.3 MP, 720p [Similar] | Yes, 1.2 MP [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSPA+ | HSDPA, 21 Mbps; HSUPA, 11 Mbps | HSDPA, HSUPA |
| Bluetooth | Yes, with A2DP | Yes, v4.0 with A2DP, EDR | Yes, v3.0 |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n, dual band, Wi-Fi hotspot | Wi-Fi 802.11 b/g/n, Wi-Fi hotspot | Wi-Fi 802.11 a/b/g/n, dual-band, Wi-Fi hotspot |
| USB | Yes, microUSB v2.0 | Yes, microUSB v2.0, USB On-the-go | Yes, microUSB v2.0, USB On-the-go |
| GPS | Yes, with A-GPS support | Yes, with A-GPS support | Yes, with A-GPS support |
| Browser | HTML5 | HTML5 | HTML |
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| Internal | 16 GB, 2 GB RAM | 4 GB storage, 1 GB RAM | 4 GB, 1 GB RAM |
| Expandable Storage | microSD, up to 32 GB | microSD, up to 32 GB | microSD, up to 32 GB |
| USB OTG | - | Supported | 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 | Li-Ion battery | Li-Ion Battery | Li-Po Battery |
| Capacity | 2500 mAh | 2500 mAh | 4000 mAh |
| Stand by | - | - | Up to 840 h |
| Talk Time | - | - | Up to 43 h (2G) Up to 25 h (3G) |
