Phone Comparison - Apple iPad 2 Wi-Fi vs Samsung Galaxy Tab 2 (7.0) vs HTC Desire 820
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| Manufacturer | Apple | Samsung | HTC |
| Announced | March 2011 | February 2012 | September 2014 |
| Status | Available - March 2011 | Available - April 2012 | Coming Soon - September 2014 |
| Colors | Black, White | Black, White | Marble White, Tuxedo Grey, Santorini White, Milky-way Grey, Tang |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
241.2 x 185.7 x 8.8 mm (9.5 x 7.31 x 0.35 in) |
193.7 x 122.4 x 10.5 mm (7.63 x 4.82 x 0.41 in) |
157.7 x 78.7 x 7.7 mm (6.21 x 3.1 x 0.3 in) |
| Weight | 601 g (21.2 oz) | 344 g (12.13 oz) | 155 g (5.47 oz) |
| 2G Network | N/A | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 |
| 3G Network | HSDPA 900 / 1900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 - EMEA version HSDPA 900 / 2100 - Asia version |
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| 4G Network | - | - | LTE 900 / 1800 / 2100 / 2600 - EMEA version |
| Messaging | , Push Mail, EMail, IM | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, Push Mail, EMail |
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| OS | iOS 4, upgradable to iOS 5 | Android OS, v4.0 (Ice Cream Sandwich) | Android OS, v4.4.2 (KitKat) |
| Processor | Dual-core 1 GHz Cortex-A9, Apple A5 | Dual-core 1 GHz, TI OMAP 4430 | Quad-core 1.5 GHz Cortex-A53 & quad-core 1.0 GHz Cortex-A53, Qualcomm MSM8939 Snapdragon 615 |
| GPU | PowerVR SGX543MP2 | PowerVR SGX540 | Adreno 405 |
| RAM | 512 MB | 1 GB | 2 GB |
| Internal Memory | 16/32/64 GB storage | 8/16/32 GB storage | 16 GB |
| External Memory | No | microSD, up to 64 GB | microSD, up to 128 GB |
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| Type | LED-backlit IPS TFT, capacitive touchscreen | PLS LCD capacitive touchscreen | LCD Capacitive Touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 9.7 inches | 7.0 inches | 5.5 inches |
| Resolution | 768 x 1024 pixels (132 ppi) | 600 x 1024 pixels (170 ppi) | 720 x 1280 pixels (267 ppi) |
| Screen-to-Body Ratio | 65.01% | 57.85% | 67.20% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | No | No | No |
| Games | Yes | Yes | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 0.7 MP, 960 x 720 pixels | 3.15 MP, 2048x1536 pixels | 13 MP, 4160 x 3120 pixels |
| Flash | No | No | LED flash |
| Features | No | Geo-tagging, Smile Detection | Auto focus, Geo-tagging, Touch Focus, Face Detection, Simultaneous HD Video And Image Recording, HDR |
| Video | Yes, 720p@30fps | Yes, 1080p@30fps | 1080p@30fps, 720p@60fps |
| Front Camera | Yes, VGA [Similar] | Yes, VGA [Similar] | 8 MP, 1080p [Similar] |
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| GPRS | No | Yes | Yes |
| Edge | No | Yes | Yes |
| 3G | No | HSDPA, 21 Mbps; HSUPA, 5.76 Mbps | HSDPA, 42 Mbps; HSUPA, 5.8 Mbps; LTE, Cat4, 50 Mbps UL, 150 Mbps DL |
| Bluetooth | Yes, v2.1 with A2DP, EDR | Yes, v3.0 with A2DP, HS | v4.0, A2DP |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n | Wi-Fi 802.11 a/b/g/n, DLNA, Wi-Fi Direct, dual-band, Wi-Fi hotspot | Wi-Fi 802.11 a/b/g/n, dual-band, Wi-Fi Direct, DLNA, Wi-Fi hotspot |
| USB | Yes, v2.0 | Yes, v2.0, USB Host support | microUSB v2.0 |
| GPS | No | Yes, with A-GPS support and GLONASS | Yes, with A-GPS, GLONASS |
| Browser | HTML (Safari) | HTML, Adobe Flash | HTML5 |
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| Internal | 16/32/64 GB storage, 512 MB RAM | 8/16/32 GB storage, 1GB RAM | 16 GB, 2 GB RAM |
| Expandable Storage | No | microSD, up to 64 GB | microSD, up to 128 GB |
| USB OTG | - | 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 | Standard battery, Li-Po | Standard battery, Li-Ion | Non-removable Li-Po Battery |
| Capacity | 6930 mAh (25 Wh) | 4000 mAh | 2600 mAh |
| Stand by | Up to 720 h | Up to 1190 h (2G) Up to 1080 h (3G) |
Up to 424 h (3G) |
| Talk Time | Up to 10 h | Up to 40 h (2G) Up to 20 h (3G) |
Up to 22 h 24 min (3G) |
