Phone Comparison - HTC Desire 820s dual sim vs Xiaomi Mi 4i vs Samsung Galaxy A8
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| Manufacturer | HTC | Xiaomi | Samsung |
| Announced | March 2015 | April 2015 | July 2015 |
| Status | Available - March 2015 | Available - April 2015 | Available - August 2015 |
| Price | Rs. 27,900 ($410.29) [Similarly Priced] | Rs. 8,999 ($132.34) [Similarly Priced] | Rs. 26,990 ($396.91) [Similarly Priced] |
| Colors | Marble White, Milkyway Gray, Monarch Orange, Santorini White, Tu | Black, White, Blue, Yellow, Pink | Pearl White, Midnight Black, Champagne Gold |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
157.7 x 78.7 x 7.7 mm (6.21 x 3.1 x 0.3 in) |
138.1 x 69.6 x 7.8 mm (5.44 x 2.74 x 0.31 in) |
158 x 76.8 x 5.9 mm (6.22 x 3.02 x 0.23 in) |
| Weight | 155 g (5.47 oz) | 130 g (4.59 oz) | 151 g (5.33 oz) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 TD-SCDMA 1900 / 2000 |
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (optional) |
| 3G Network | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 |
| 4G Network | LTE 900 / 1800 / 2100 / 2600 TD-LTE 1900 / 2300 / 2500 / 2600 (Bands 1, 3, 7, 8, 38, 39, 40, 41) |
LTE | LTE |
| Messaging | SMS, MMS, Push Mail, EMail | SMS, MMS, EMail, IM | SMS, MMS, EMail, IM |
| Build Features | - | - | - Fingerprint sensor |
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| OS | Android OS, v4.4.4 (KitKat) | Android OS, v5.0 (Lollipop) | Android OS, v5.1 (Lollipop) |
| Processor | Octa-core 1.7 GHz Cortex-A53, Mediatek MT6752 | Quad-core 1.7 GHz Cortex-A53 & quad-core 1.0 GHz Cortex-A53, Qualcomm MSM8939 Snapdragon 615 | Quad-core 1.5 GHz Cortex-A53 & quad-core 1.0 GHz Cortex-A53, Qualcomm MSM8939 Snapdragon 615 |
| GPU | Mali-T760MP2 | Adreno 405 | Adreno 405 |
| RAM | 2 GB | 2 GB | 2 GB |
| Internal Memory | 16 GB | 16/32 GB | 16/32 GB |
| External Memory | microSD, up to 32 GB | No | microSD, up to 128 GB (uses SIM 2 slot) |
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| Type | Capacitive Touchscreen, Corning Gorilla Glass 3 | IPS LCD capacitive touchscreen | Super AMOLED capacitive touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 5.5 inches | 5.0 inches | 5.7 inches |
| Resolution | 720 x 1280 pixels (267 ppi) | 1080 x 1920 pixels (441 ppi) | 1080 x 1920 pixels (386 ppi) |
| Screen-to-Body Ratio | 67.20% | 71.57% | 73.99% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | FM radio | FM radio | FM radio with RDS; recording |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 13 MP, 4160 x 3120 pixels | 13 MP, 4128 x 3096 pixels | 16 MP, 5312 x 2988 pixels |
| Flash | LED flash | LED flash | LED flash |
| Features | Auto focus, Geo-tagging, Touch Focus, Face Detection, HDR, Panorama | Auto focus, Geo-tagging, Touch Focus, Face/smile Detection, Panorama, HDR | Auto focus, Geo-tagging, Touch Focus, Face Detection, Panorama, HDR |
| Video | 1080p@30fps | 1080p@30fps | 1080p@30fps |
| Front Camera | 8 MP, 1080p [Similar] | 5 MP [Similar] | 5 MP, 1080p [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps | HSPA, LTE | HSPA 42.2/5.76 Mbps, LTE Cat6 300/50 Mbps |
| Bluetooth | v4.0, A2DP | v4.0, A2DP | v4.1, A2DP, EDR, LE |
| Wi-Fi | Wi-Fi 802.11 b/g/n, hotspot | Wi-Fi 802.11 a/b/g/n, dual-band, hotspot | Wi-Fi 802.11 a/b/g/n, dual-band, WiFi Direct, hotspot |
| USB | microUSB v2.0 | microUSB v2.0 | microUSB v2.0 |
| GPS | Yes, with A-GPS, GLONASS | Yes, with A-GPS, GLONASS | Yes, with A-GPS, GLONASS/ Beidou (market dependant) |
| Browser | HTML5 | HTML5 | HTML5 |
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| Internal | 16 GB, 2 GB RAM | 16/32 GB, 2 GB RAM | 16/32 GB, 2 GB RAM |
| Expandable Storage | microSD, up to 32 GB | No | microSD, up to 128 GB (uses SIM 2 slot) |
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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-Po Battery | Non-removable Li-Ion Battery |
| Capacity | 2600 mAh | 3120 mAh | 3050 mAh |
| Stand by | Up to 560 h (3G) | - | - |
| Talk Time | Up to 12 h 10 min (3G) | - | - |
