Phone Comparison - Apple iPad 2 Wi-Fi + 3G vs Apple iPad 4 Wi-Fi vs Apple iPad Air
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| Manufacturer | Apple | Apple | Apple |
| Announced | March 2011 | October 2012 | October 2013 |
| Status | Available - March 2011 | Available - November 2012 | Available - November 2013 |
| Colors | Black, White | Black, White | Space Gray, Silver |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
241.2 x 185.7 x 8.8 mm (9.5 x 7.31 x 0.35 in) |
241.2 x 185.7 x 9.4 mm (9.5 x 7.31 x 0.37 in) |
240 x 169.5 x 7.5 mm (9.45 x 6.67 x 0.3 in) |
| Weight | 607 g (21.41 oz) | 652 g (23 oz) | 469 g / 478 g (16.54 oz / 16.86 oz) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 | N/A | GSM 850 / 900 / 1800 / 1900 CDMA2000 1xEV-DO |
| 3G Network | HSDPA 850 / 900 / 1900 / 2100 | N/A | HSDPA 850 / 900 / 1900 / 2100 |
| 4G Network | - | - | LTE- all models |
| Messaging | , Push Mail, EMail, IM | , Push Mail, EMail, IM | , Push Mail, EMail, IM |
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| OS | iOS 4, upgradable to iOS 5 | iOS 6 | iOS 7.0.2 |
| Processor | Dual-core 1 GHz Cortex-A9, Apple A5 | Dual-core 1.4 GHz, Apple A6X | Dual-core 1.3 GHz Cyclone (ARM v8-based), Apple A7 |
| GPU | PowerVR SGX543MP2 | PowerVR SGX554MP4 (quad-core graphics) | PowerVR G6430 (quad-core graphics) |
| RAM | 512 MB | 1 GB | N/A |
| Internal Memory | 16/32/64 GB storage | 16/32/64 GB storage | 16/32/64/128 GB storage |
| External Memory | No | No | No |
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| Type | LED-backlit IPS TFT, capacitive touchscreen | LED-backlit IPS LCD, capacitive touchscreen | LED-backlit IPS LCD, capacitive touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 9.7 inches | 9.7 inches | 9.7 inches |
| Resolution | 768 x 1024 pixels (132 ppi) | 1536 x 2048 pixels (264 ppi) | 1536 x 2048 pixels (264 ppi) |
| Screen-to-Body Ratio | 65.01% | 65.01% | 71.58% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | No | No | No |
| Games | Yes | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 0.7 MP, 960 x 720 pixels | 5 MP, 2592 x 1944 pixels | 5 MP, 2592 x 1944 pixels |
| Flash | No | No | No |
| Features | No | Auto focus, Touch Focus, Geo-tagging, Face Detection | Auto focus, Geo-tagging, Touch Focus, Face Detection, HDR |
| Video | Yes, 720p@30fps | Yes, 1080p@30fps, video stabilization | Yes, 1080p@30fps, video stabilization |
| Front Camera | Yes, VGA [Similar] | Yes, 1.2 MP, 720p@30fps, face detection, [Similar] | Yes, 1.2 MP, 720p@30fps, face detection, [Similar] |
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| GPRS | Yes | No | Yes |
| Edge | Yes | No | Yes |
| 3G | HSDPA; HSUPA | N/A | DC-HSDPA, 42 Mbps; HSDPA, 21 Mbps; HSUPA, 5.76 Mbps, LTE, 100 Mbps; EV-DO Rev. A, up to 3.1 Mbps |
| Bluetooth | Yes, v2.1 with A2DP, EDR | Yes, v4.0 with A2DP | Yes, v4.0 with A2DP |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n | Wi-Fi 802.11 a/b/g/n, dual-band | Wi-Fi 802.11 a/b/g/n, dual-band, Wi-Fi hotspot |
| USB | Yes, v2.0 | Yes, v2.0 | Yes, v2.0 |
| GPS | Yes, with A-GPS support | No | Yes, with A-GPS support and GLONASS |
| Browser | HTML (Safari) | HTML (Safari) | HTML (Safari) |
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| Internal | 16/32/64 GB storage, 512 MB RAM | 16/32/64 GB storage, 1 GB RAM | 16/32/64/128 GB storage |
| Expandable Storage | No | No | No |
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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-Po | Non-removable, Li-Po Battery | Non-removable Li-Po battery (32.4 Wh) |
| Capacity | 6930 mAh (25 Wh) | 11,560 mAh | - |
| Stand by | Up to 720 h | Up to 720 h | - |
| Talk Time | Up to 10 h | Up to 10 h | Up to 10 h (multimedia) |
