Phone Comparison - Samsung Ativ S vs Microsoft Lumia 640 Dual SIM vs Microsoft Lumia 640 XL LTE Dual SIM
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| Manufacturer | Samsung | Microsoft | Microsoft |
| Announced | August 2012 | March 2015 | March 2015 |
| Status | Released - December 2012 | Available - April 2015 | Available - April 2015 |
| Price | - | Rs. 8,999 ($132.34) [Similarly Priced] | Rs. 14,999 ($220.57) [Similarly Priced] |
| Colors | Gray | Yes | Matte cyan, Orange, Black, Matte white, Glossy white |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
137.2 x 70.5 x 8.7 mm (5.4 x 2.78 x 0.34 in) |
141.3 x 72.2 x 8.8 mm (5.56 x 2.84 x 0.35 in) |
157.9 x 81.5 x 9 mm (6.22 x 3.21 x 0.35 in) |
| Weight | 135 g (4.76 oz) | 145 g (5.11 oz) | 171 g (6.03 oz) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 3G Network | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 |
| 4G Network | - | - | LTE |
| Messaging | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, Push Mail, EMail, IM |
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| OS | Microsoft Windows Phone 8 | Microsoft Windows Phone 8.1 with Lumia Denim | Microsoft Windows Phone 8.1 with Lumia Denim |
| Processor | Dual-core Krait 1.5 GHz, Qualcomm MSM8960 Snapdragon | Quad-core 1.2 GHz Cortex-A7, Qualcomm Snapdragon 400 | Quad-core 1.2 GHz Cortex-A7, Qualcomm Snapdragon 400 |
| GPU | Adreno 225 | Adreno 305 | Adreno 305 |
| RAM | 1 GB | 1 GB | 1 GB |
| Internal Memory | 16/32 GB storage | 8 GB | 8 GB |
| External Memory | microSD, up to 32 GB | microSD, up to 128 GB | microSD, up to 128 GB |
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| Type | Super AMOLED capacitive touchscreen | IPS LCD Capacitive Touchscreen, Corning Gorilla Glass 3, ClearBlack Display | IPS LCD Capacitive Touchscreen, Corning Gorilla Glass 3, ClearBlack Display |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 4.8 inches | 5.0 inches | 5.7 inches |
| Resolution | 720 x 1280 pixels (306 ppi) | 720 x 1280 pixels (294 ppi) | 720 x 1280 pixels (259 ppi) |
| Screen-to-Body Ratio | 65.65% | 67.43% | 68.88% |
| 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, 3264x2448 pixels | 8 MP, 3264 x 2448 pixels | 13 MP, 4128 x 3096 pixels |
| Flash | LED flash | LED flash | LED Flash |
| Features | Auto focus, Geo-tagging, Image Stabilization | Auto focus, 1/4'' Sensor Size | Carl Zeiss Optics, 1/3'' sensor size |
| Video | Yes, 1080p@30fps | 1080p@30fps | 1080p@30fps |
| Front Camera | Yes, 1.9 MP [Similar] | 1 MP, 720p [Similar] | 5 MP, 1080p [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSDPA, 42 Mbps; HSUPA, 5.76 Mbps | HSPA 42.2/5.76 Mbps | HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps |
| Bluetooth | Yes, v3.0 with 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, DLNA, hotspot | Wi-Fi 802.11 b/g/n, DLNA, hotspot |
| USB | Yes, microUSB v2.0 | microUSB v2.0 | microUSB v2.0 |
| GPS | Yes, with A-GPS support and GLONASS | Yes, with A-GPS, GLONASS, Beidou | Yes, with A-GPS, GLONASS, Beidou |
| Browser | HTML5 | HTML5 | HTML5 |
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| Internal | 16/32 GB storage, 1 GB RAM | 8 GB, 1 GB RAM | 8 GB, 1 GB RAM |
| Expandable Storage | microSD, up to 32 GB | microSD, up to 128 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 | Li-Ion Battery | Li-Ion Battery |
| Capacity | 2300 mAh | 2500 mAh | 3000 mAh |
| Stand by | Up to 168 h (2G) Up to 218 h (3G) |
Up to 840 h (2G) Up to 840 h (3G) |
Up to 936 h (2G) Up to 936 h (3G) |
| Talk Time | Up to 8 h (2G) Up to 14 h 50 min (3G) |
Up to 27 h 30 min (2G) Up to 20 h 30 min (3G) |
Up to 31 h 20 min (2G) Up to 23 h 40 min (3G) |
