Phone Comparison - Samsung Galaxy Express vs Microsoft Lumia 640 LTE vs ZTE Zmax 2
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| Manufacturer | Samsung | Microsoft | ZTE |
| Announced | January 2013 | March 2015 | September 2015 |
| Status | Available - March 2013 | Available - April 2015 | Coming Soon - September 2015 |
| Price | - | Rs. 7,999 ($117.63) [Similarly Priced] | Rs. 6,750 ($99.00) [Similarly Priced] |
| Colors | White | Yes | Black |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
132.2 x 69.1 x 9.3 mm (5.2 x 2.72 x 0.37 in) |
141.3 x 72.2 x 8.8 mm (5.56 x 2.84 x 0.35 in) |
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| Weight | 139.1 g (4.9.0.04 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 850 / 900 / 2100 | HSDPA 850 / 900 / 2100 | HSDPA 850 / 1700 / 1900 / 2100 |
| 4G Network | LTE 800 / 900 / 1800 / 2600 | LTE | LTE band 2(1900), 4(1700/2100), 7(2600), 12(700) |
| Messaging | SMS, MMS, EMail, IM | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, Push Mail, EMail, IM |
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| OS | Android OS, v4.1 (Jelly Bean) | Microsoft Windows Phone 8.1 with Lumia Denim | Android OS, v5.1 (Lollipop) |
| Processor | Dual-core 1.2 GHz | Quad-core 1.2 GHz Cortex-A7, Qualcomm Snapdragon 400 | Quad-core 1.2 GHz Cortex-A53, Qualcomm MSM8916 Snapdragon 410 |
| GPU | - | Adreno 305 | Adreno 306 |
| RAM | 1 GB | 1 GB | 2 GB |
| Internal Memory | 8 GB storage | 8 GB | 16 GB |
| External Memory | microSD, up to 32 GB | microSD, up to 128 GB | microSD, up to 32 GB |
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| Type | Super AMOLED Plus capacitive touchscreen | IPS LCD Capacitive Touchscreen, Corning Gorilla Glass 3, ClearBlack Display | IPS LCD capacitive touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 4.5 inches | 5.0 inches | 5.5 inches |
| Resolution | 480 x 800 pixels (207 ppi) | 720 x 1280 pixels (294 ppi) | 720 x 1280 pixels (267 ppi) |
| Screen-to-Body Ratio | 63.29% | 67.43% | - |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | Stereo FM radio with RDS, FM r | FM radio | - |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 5 MP, 2592х1944 pixels | 8 MP, 3264 x 2448 pixels | 8 MP, 3264 x 2448 pixels |
| Flash | LED flash | LED flash | LED flash |
| Features | Auto focus, Geo-tagging, Touch Focus, Face Detection | Auto focus, 1/4'' Sensor Size | Auto focus, Geo-tagging, Touch Focus, Face Detection, HDR, Panorama |
| Video | Yes, 720p@30fps | 1080p@30fps | 1080p@30fps |
| Front Camera | Yes, 1.3 MP, 720p@30fps [Similar] | 1 MP, 720p [Similar] | 2 MP [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSPA, LTE | HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps | HSPA, LTE Cat4 150/50 Mbps |
| Bluetooth | Yes, v4.0 with A2DP, EDR | v4.0, A2DP | v4.0, A2DP |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n, dual-band, Wi-Fi Direct, Wi-Fi hotspot | Wi-Fi 802.11 b/g/n, DLNA, hotspot | Wi-Fi 802.11 a/b/g/n, dual band, hotspot |
| USB | Yes, microUSB v2.0 (MHL) | microUSB v2.0 | microUSB v2.0 |
| GPS | Yes, with A-GPS support and GLONASS | Yes, with A-GPS, GLONASS, Beidou | Yes, with A-GPS |
| Browser | HTML5 | HTML5 | HTML5 |
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| Internal | 8 GB storage, 1 GB RAM | 8 GB, 1 GB RAM | 16 GB, 2 GB RAM |
| Expandable Storage | microSD, up to 32 GB | microSD, up to 128 GB | microSD, up to 32 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 | 2000 mAh | 2500 mAh | 3000 mAh |
| Stand by | Up to 830 h (2G) Up to 770 h (3G) |
Up to 864 h (2G) Up to 864 h (3G) |
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| Talk Time | Up to 22 h 30 min (2G) Up to 11 h 30 min (3G) |
Up to 26 h 30 min (2G) Up to 17 h 30 min (3G) |
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