Phone Comparison - Sony Xperia M2 vs Samsung Galaxy Ace 4 vs Microsoft Lumia 640 LTE
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| Manufacturer | Sony | Samsung | Microsoft |
| Announced | February 2014 | June 2014 | March 2015 |
| Status | Available - May 2014 | Available - July 2014 | Available - April 2015 |
| Price | - | - | Rs. 7,999 ($117.63) [Similarly Priced] |
| Colors | Black, White, Purple | Iris Charcoal, Classic White | Yes |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
139.6 x 71.1 x 8.6 mm (5.5 x 2.8 x 0.34 in) |
121.4 x 62.9 x 10.8 mm (4.78 x 2.48 x 0.43 in) |
141.3 x 72.2 x 8.8 mm (5.56 x 2.84 x 0.35 in) |
| Weight | 148 g (5.22 oz) | 123.8 g (4.34.0.28 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 | HSDPA 900 / 2100 | HSDPA 850 / 900 / 2100 |
| 4G Network | - | - | LTE |
| Messaging | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, Push Mail, EMail, IM |
| Build Features | Scratch-Resistant Glass | - | - |
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| OS | Android OS, v4.3 (Jelly Bean) | Android OS, v4.4.2 (KitKat) | Microsoft Windows Phone 8.1 with Lumia Denim |
| Processor | Quad-core 1.2 GHz Cortex-A7, Qualcomm MSM8926 Snapdragon 400 (D2303, D2306)/ MSM8226 (D2305) | Dual-core 1.0 GHz | Quad-core 1.2 GHz Cortex-A7, Qualcomm Snapdragon 400 |
| GPU | Adreno 305 | - | Adreno 305 |
| RAM | 1 GB | 512 MB | 1 GB |
| Internal Memory | 8 GB ROM | 4 GB | 8 GB |
| External Memory | microSD, up to 32 GB | microSD, up to 64 GB | microSD, up to 128 GB |
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| Type | TFT Capacitive Touchscreen | TFT capacitive touchscreen | IPS LCD Capacitive Touchscreen, Corning Gorilla Glass 3, ClearBlack Display |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 4.8 inches | 4.0 inches | 5.0 inches |
| Resolution | 540 x 960 pixels (229 ppi) | 480 x 800 pixels (233 ppi) | 720 x 1280 pixels (294 ppi) |
| Screen-to-Body Ratio | 64.25% | 59.76% | 67.43% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | Stereo FM radio with RDS | FM radio | FM radio |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 8 MP, 3264 x 2448 pixels | 5 MP, 2592 х 1944 pixels | 8 MP, 3264 x 2448 pixels |
| Flash | LED flash | LED flash | LED flash |
| Features | Auto focus, Geo-tagging, Touch Focus, Face And Smile Detection, Image Stabilization, HDR, Panorama | Auto focus, Geo-tagging, Face And Smile Detection, Panorama | Auto focus, 1/4'' Sensor Size |
| Video | Yes, 1080p | Yes, 720p@30fps | 1080p@30fps |
| Front Camera | Yes [Similar] | Yes, VGA [Similar] | 1 MP, 720p [Similar] |
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| GPRS | Up to 86 kbps | Yes | Yes |
| Edge | Up to 237 kbps | Yes | Yes |
| 3G | HSDPA, 21 Mbps; HSUPA, 5.76 Mbps | HSDPA, 21 Mbps; HSUPA, 5.76 Mbps | HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps |
| Bluetooth | Yes, v4.0 with A2DP | Yes, v4.0 with 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, Wi-Fi Direct, Wi-Fi hotspot | Wi-Fi 802.11 b/g/n, DLNA, hotspot |
| USB | Yes, microUSB v2.0, USB On-the-go | 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, Beidou |
| Browser | HTML5 | HTML5 | HTML5 |
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| Internal | 8 GB ROM, 1 GB RAM | 4 GB, 512 MB RAM | 8 GB, 1 GB RAM |
| Expandable Storage | microSD, up to 32 GB | 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 | Li-Ion Battery | Li-Ion Battery | Li-Ion Battery |
| Capacity | 2300 mAh | 1500 mAh | 2500 mAh |
| Stand by | Up to 588 h (2G) Up to 633 h (3G) |
- | Up to 864 h (2G) Up to 864 h (3G) |
| Talk Time | Up to 13 h 25 min (2G) Up to 14 h 36 min (3G) |
- | Up to 26 h 30 min (2G) Up to 17 h 30 min (3G) |
