Phone Comparison - Samsung Ativ S vs Karbonn A90 vs Nokia Lumia 730 Dual SIM
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| Manufacturer | Samsung | Karbonn | Nokia |
| Announced | August 2012 | October 2013 | September 2014 |
| Status | Released - December 2012 | Available - October 2013 | Available - September 2014 |
| Colors | Gray | White/Black | Orange, green, white, black |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
137.2 x 70.5 x 8.7 mm (5.4 x 2.78 x 0.34 in) |
- |
134.7 x 68.5 x 8.9 mm (5.3 x 2.7 x 0.35 in) |
| Weight | 135 g (4.76 oz) | - | 134 g (4.73 oz) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 | GSM 900 / 1800 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 3G Network | HSDPA 850 / 900 / 1900 / 2100 | No | HSDPA 850 / 900 / 1900 / 2100 |
| Messaging | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, EMail, IM | SMS, MMS, Push Mail, EMail, IM |
| Build Features | - | - | ClearBlack display |
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| OS | Microsoft Windows Phone 8 | Android OS, v4.0 (Ice Cream Sandwich) | Microsoft Windows Phone 8.1 |
| Processor | Dual-core Krait 1.5 GHz, Qualcomm MSM8960 Snapdragon | 1 GHz | Quad-core 1.2 GHz Cortex-A7, Qualcomm Snapdragon 400 |
| GPU | Adreno 225 | - | Adreno 305 |
| RAM | 1 GB | 512 MB | 1 GB |
| Internal Memory | 16/32 GB storage | 512 MB ROM | 8 GB |
| External Memory | microSD, up to 32 GB | microSD, up to 32 GB | microSD, up to 128 GB |
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| Type | Super AMOLED capacitive touchscreen | IPS LCD capacitive touchscreen | AMOLED Capacitive Touchscreen, Corning Gorilla Glass 3 |
| Colors | 16M colors | 256K colors | 16M colors |
| Size | 4.8 inches | 4.0 inches | 4.7 inches |
| Resolution | 720 x 1280 pixels (306 ppi) | 480 x 800 pixels (233 ppi) | 720 x 1280 pixels (312 ppi) |
| Screen-to-Body Ratio | 65.65% | - | 66.20% |
| 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 | 5 MP, 2592x1944 pixels | 6.7 MP, Carl Zeiss optics |
| Flash | LED flash | LED flash | LED flash |
| Features | Auto focus, Geo-tagging, Image Stabilization | - | Auto focus, 1/3.4'' Sensor Size, Geo-tagging, Face Detection, Panorama |
| Video | Yes, 1080p@30fps | Yes | 1080p@30fps, stereo sound rec. |
| Front Camera | Yes, 1.9 MP [Similar] | Yes [Similar] | 5 MP, 720p [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Up to 296 kbps |
| 3G | HSDPA, 42 Mbps; HSUPA, 5.76 Mbps | No | HSDPA, 21.1 Mbps; HSUPA, 5.76 Mbps |
| Bluetooth | Yes, v3.0 with A2DP | Yes | 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 hotspot | Wi-Fi 802.11 b/g/n, DLNA, Wi-Fi hotspot |
| USB | Yes, microUSB v2.0 | Yes | microUSB v2.0 |
| GPS | Yes, with A-GPS support and GLONASS | No | Yes, with A-GPS, GLONASS, Beidou |
| Browser | HTML5 | HTML | HTML5 |
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| Internal | 16/32 GB storage, 1 GB RAM | 512 MB ROM, 512 MB RAM | 8 GB, 1 GB RAM |
| Expandable Storage | microSD, up to 32 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 | Standard battery, Li-Ion | Li-Ion Battery | Li-Ion Battery (BV-T5A) |
| Capacity | 2300 mAh | 1400 mAh | 2200 mAh |
| Stand by | Up to 168 h (2G) Up to 218 h (3G) |
- | Up to 600 h |
| Talk Time | Up to 8 h (2G) Up to 14 h 50 min (3G) |
- | Up to 22 h (2G) Up to 17 h (3G) |
