Phone Comparison - Samsung Galaxy Ace 2 vs Sony Xperia Z vs HTC Desire 820
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| Manufacturer | Samsung | Sony | HTC |
| Announced | February 2012 | January 2013 | September 2014 |
| Status | Available - May 2012 | Released - February 2013 | Coming Soon - September 2014 |
| Colors | Black | Black, White, Purple | Marble White, Tuxedo Grey, Santorini White, Milky-way Grey, Tang |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
118.3 x 62.2 x 10.5 mm (4.66 x 2.45 x 0.41 in) |
139 x 71 x 7.9 mm (5.47 x 2.8 x 0.31 in) |
157.7 x 78.7 x 7.7 mm (6.21 x 3.1 x 0.3 in) |
| Weight | 122 g (4.3 oz) | 146 g (5.15 oz) | 155 g (5.47 oz) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 - C6602, C6603 | GSM 850 / 900 / 1800 / 1900 |
| 3G Network | HSDPA 900 / 2100 | HSDPA 850 / 900 / 2100 - C6603 HSDPA 850 / 900 / 1700 / 1900 / 2100 - C6602 |
HSDPA 850 / 900 / 1900 / 2100 - EMEA version HSDPA 900 / 2100 - Asia version |
| 4G Network | - | LTE 800 / 850 / 900 / 1800 / 2100 / 2600 - C6603 | LTE 900 / 1800 / 2100 / 2600 - EMEA version |
| Messaging | SMS, MMS, EMail, IM | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, Push Mail, EMail |
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| OS | Android OS, v2.3 | Android OS, v4.1.2 (Jelly Bean), planned upgrade to v4.2.0 | Android OS, v4.4.2 (KitKat) |
| Processor | Dual-core 800 MHz, NovaThor U8500 | Quad-core 1.5 GHz Krait, Qualcomm MDM9215M / APQ8064 | Quad-core 1.5 GHz Cortex-A53 & quad-core 1.0 GHz Cortex-A53, Qualcomm MSM8939 Snapdragon 615 |
| GPU | Mali-400MP | Adreno 320 | Adreno 405 |
| RAM | 768 MB | 2 GB | 2 GB |
| Internal Memory | 4 GB storage | 16 GB | 16 GB |
| External Memory | microSD, up to 32GB | microSD, up to 32 GB | microSD, up to 128 GB |
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| Type | PLS TFT capacitive touchscreen | Capacitive touchscreen | LCD Capacitive Touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 3.8 inches | 5.0 inches | 5.5 inches |
| Resolution | 480 x 800 pixels (246 ppi) | 1080 x 1920 pixels (441 ppi) | 720 x 1280 pixels (267 ppi) |
| Screen-to-Body Ratio | 55.64% | 69.70% | 67.20% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | Stereo FM radio with RDS | Stereo FM radio with RDS | No |
| Games | Yes | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 5 MP, 2592x1944 pixels | 13 MP, 4128x3096 pixels | 13 MP, 4160 x 3120 pixels |
| Flash | LED flash | LED flash | LED flash |
| Features | Auto focus, Geo-tagging, Face And Smile Detection | Auto focus, Geo-tagging, Touch Focus, Face Detection, Image Stabilization | Auto focus, Geo-tagging, Touch Focus, Face Detection, Simultaneous HD Video And Image Recording, HDR |
| Video | Yes, 720p@30fps | Yes, 1080p@30fps, continuous autofocus, video light, video stabilizer | 1080p@30fps, 720p@60fps |
| Front Camera | Yes, VGA [Similar] | Yes, 2.2 MP, 1080p@30fps [Similar] | 8 MP, 1080p [Similar] |
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| GPRS | Yes | Up to 107 kbps | Yes |
| Edge | Yes | Up to 296 kbps | Yes |
| 3G | HSDPA, 14.4 Mbps | HSDPA, 42 Mbps; HSUPA, 5.8 Mbps; LTE, Cat3, 50 Mbps UL, 100 Mbps DL | HSDPA, 42 Mbps; HSUPA, 5.8 Mbps; LTE, Cat4, 50 Mbps UL, 150 Mbps DL |
| Bluetooth | Yes, v3.0 with A2DP | Yes, v4.0 with A2DP | v4.0, A2DP |
| Wi-Fi | Wi-Fi 802.11 b/g/n, DLNA, Wi-Fi Direct, Wi-Fi hotspot | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, DLNA, Wi-Fi hotspot | Wi-Fi 802.11 a/b/g/n, dual-band, Wi-Fi Direct, DLNA, Wi-Fi hotspot |
| USB | Yes, v2.0 microUSB | Yes, microUSB v2.0 | microUSB v2.0 |
| GPS | Yes, with A-GPS support and GLONASS | Yes, with A-GPS support and GLONASS | Yes, with A-GPS, GLONASS |
| Browser | HTML | HTML5 | HTML5 |
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| Internal | 4 GB storage, 768 MB RAM | 16 GB, 2 GB RAM | 16 GB, 2 GB RAM |
| Expandable Storage | microSD, up to 32GB | 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 | Standard battery, Li-Ion | Non-removable, Li-Ion Battery | Non-removable Li-Po Battery |
| Capacity | 1500 mAh | 2330 mAh | 2600 mAh |
| Stand by | Up to 670 h (2G) Up to 640 h (3G) |
Up to 550 h (2G) Up to 530 h (3G) |
Up to 424 h (3G) |
| Talk Time | Up to 16 h 20 min (2G) Up to 7 h 30 min (3G) |
Up to 11 h (2G) Up to 14 h (3G) |
Up to 22 h 24 min (3G) |
