Phone Comparison - HTC Desire 820 vs HTC Desire 320 vs Microsoft Lumia 640 LTE
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| Manufacturer | HTC | HTC | Microsoft |
| Announced | September 2014 | January 2015 | March 2015 |
| Status | Coming Soon - September 2014 | Available - January 2015 | Available - April 2015 |
| Price | - | Rs. 6,820 ($99.99) [Similarly Priced] | Rs. 7,999 ($117.63) [Similarly Priced] |
| Colors | Marble White, Tuxedo Grey, Santorini White, Milky-way Grey, Tang | Meridian Gray, White | Yes |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
157.7 x 78.7 x 7.7 mm (6.21 x 3.1 x 0.3 in) |
132 x 67.8 x 10.5 mm (5.2 x 2.67 x 0.41 in) |
141.3 x 72.2 x 8.8 mm (5.56 x 2.84 x 0.35 in) |
| Weight | 155 g (5.47 oz) | 145 g (5.11 oz) | 145 g (5.11 oz) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 |
| 3G Network | HSDPA 850 / 900 / 1900 / 2100 - EMEA version HSDPA 900 / 2100 - Asia version |
HSDPA 850 / 1900 - North America HSDPA 900 / 2100 - EU |
HSDPA 850 / 900 / 2100 |
| 4G Network | LTE 900 / 1800 / 2100 / 2600 - EMEA version | - | LTE |
| Messaging | SMS, MMS, Push Mail, EMail | SMS, MMS, Push Mail, EMail | SMS, MMS, Push Mail, EMail, IM |
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| OS | Android OS, v4.4.2 (KitKat) | Android OS, v4.4.2 (KitKat) | Microsoft Windows Phone 8.1 with Lumia Denim |
| Processor | Quad-core 1.5 GHz Cortex-A53 & quad-core 1.0 GHz Cortex-A53, Qualcomm MSM8939 Snapdragon 615 | Quad-core 1.3 GHz | Quad-core 1.2 GHz Cortex-A7, Qualcomm Snapdragon 400 |
| GPU | Adreno 405 | - | Adreno 305 |
| RAM | 2 GB | 1 GB | 1 GB |
| Internal Memory | 16 GB | 4 GB, 512 MB (North America) 8 GB |
8 GB |
| External Memory | microSD, up to 128 GB | microSD, up to 32 GB | microSD, up to 128 GB |
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| Type | LCD Capacitive Touchscreen | TFT capacitive touchscreen | IPS LCD Capacitive Touchscreen, Corning Gorilla Glass 3, ClearBlack Display |
| Colors | 16M colors | - | 16M colors |
| Size | 5.5 inches | 4.5 inches | 5.0 inches |
| Resolution | 720 x 1280 pixels (267 ppi) | 480 x 854 pixels (218 ppi) | 720 x 1280 pixels (294 ppi) |
| Screen-to-Body Ratio | 67.20% | 62.18% | 67.43% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | No | FM radio (EU model only) | FM radio |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 13 MP, 4160 x 3120 pixels | 5 MP, 2592 х 1944 pixels / LED flash (EU m | 8 MP, 3264 x 2448 pixels |
| Flash | LED flash | No | LED flash |
| Features | Auto focus, Geo-tagging, Touch Focus, Face Detection, Simultaneous HD Video And Image Recording, HDR | Yes | Auto focus, 1/4'' Sensor Size |
| Video | 1080p@30fps, 720p@60fps | 1080p | 1080p@30fps |
| Front Camera | 8 MP, 1080p [Similar] | VGA [Similar] | 1 MP, 720p [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSDPA, 42 Mbps; HSUPA, 5.8 Mbps; LTE, Cat4, 50 Mbps UL, 150 Mbps DL | HSPA 21.1/5.76 Mbps | HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps |
| Bluetooth | v4.0, A2DP | v4.0, A2DP | v4.0, A2DP |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n, dual-band, Wi-Fi Direct, DLNA, Wi-Fi hotspot | Wi-Fi 802.11 b/g/n, hotspot | Wi-Fi 802.11 b/g/n, DLNA, hotspot |
| USB | microUSB v2.0 | microUSB v2.0 | microUSB v2.0 |
| GPS | Yes, with A-GPS, GLONASS | Yes, with A-GPS | Yes, with A-GPS, GLONASS, Beidou |
| Browser | HTML5 | HTML5 | HTML5 |
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| Internal | 16 GB, 2 GB RAM | 4 GB, 512 MB (North America) 8 GB, 1 GB RAM (EU) |
8 GB, 1 GB RAM |
| Expandable Storage | microSD, up to 128 GB | microSD, up to 32 GB | microSD, up to 128 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 | Non-removable Li-Po Battery | Li-Ion Battery | Li-Ion Battery |
| Capacity | 2600 mAh | 2100 mAh | 2500 mAh |
| Stand by | Up to 424 h (3G) | Up to 690 h (3G) | Up to 864 h (2G) Up to 864 h (3G) |
| Talk Time | Up to 22 h 24 min (3G) | Up to 12 h (3G) | Up to 26 h 30 min (2G) Up to 17 h 30 min (3G) |
