Phone Comparison - Microsoft Lumia 640 LTE vs Samsung Galaxy J1 Ace vs Samsung Z4
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| Manufacturer | Microsoft | Samsung | Samsung |
| Announced | March 2015 | August 2015 | May 2017 |
| Status | Available - April 2015 | Available - August 2015 | Coming Soon - May 2017 |
| Price | Rs. 7,999 ($117.63) [Similarly Priced] | Rs. 5,850 ($86.03) [Similarly Priced] | - |
| Colors | Yes | Blue, Black, White | Black, Silver, Gold |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
141.3 x 72.2 x 8.8 mm (5.56 x 2.84 x 0.35 in) |
130.1 x 67.6 x 9.5 mm (5.12 x 2.66 x 0.37 in) |
132.9 x 69.2 x 10.3 mm (5.23 x 2.72 x 0.41 in) |
| Weight | 145 g (5.11 oz) | 131 g (4.62 oz) | 143 g (5.04 oz) |
| SIM Type | - | Dual-SIM | Dual-SIM |
| 2G Network | GSM 850 / 900 / 1800 / 1900 | 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 / 2100 | HSDPA 900 / 2100 (Single or Dual SIM) HSDPA 850 / 2100 (Dual SIM) |
HSDPA 900 / 2100 |
| 4G Network | LTE | - | LTE |
| Messaging | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, EMail, IM | SMS, MMS, EMail, IM |
| Notification LED | - | - | No |
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| OS | Microsoft Windows Phone 8.1 with Lumia Denim | Android OS, v4.4.x (KitKat) | Tizen OS, v3.0 |
| Processor | Quad-core 1.2 GHz Cortex-A7, Qualcomm Snapdragon 400 | Quad-core 1.5 GHz - J111F / Quad-core 1.2 GHz / Dual-core 1.3 GHz - J110L | Quad-core 1.5 GHz, Spreadtrum 9830A |
| GPU | Adreno 305 | - | Mali-400 MP |
| RAM | 1 GB | 1 GB | 1 GB |
| Internal Memory | 8 GB | 8 GB | 8 GB |
| External Memory | microSD, up to 128 GB | microSD, up to 128 GB | microSD, up to 128 GB |
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| Type | IPS LCD Capacitive Touchscreen, Corning Gorilla Glass 3, ClearBlack Display | Super AMOLED Capacitive Touchscreen | Super AMOLED capacitive touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 5.0 inches | 4.3 inches | 4.5 inches |
| Resolution | 720 x 1280 pixels (294 ppi) | 480 x 800 pixels (217 ppi) | 480 x 800 pixels (207 ppi) |
| Screen-to-Body Ratio | 67.43% | 59.82% | 62.87% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | 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 | 5 MP |
| Flash | LED flash | LED Flash | LED flash |
| Features | Auto focus, 1/4'' Sensor Size | Auto focus, Geo-tagging, Touch Focus, Face Detection | Geo-tagging, Face Detection |
| Video | 1080p@30fps | 720p@30fps | Yes |
| Front Camera | 1 MP, 720p [Similar] | 2 MP [Similar] | 5 MP, LED Flash [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps | HSPA | HSPA, VoLTE |
| Bluetooth | v4.0, A2DP | v4.0, A2DP | v4.0, A2DP, LE |
| Wi-Fi | Wi-Fi 802.11 b/g/n, DLNA, hotspot | Wi-Fi 802.11 b/g/n | Wi-Fi 802.11 b/g/n |
| USB | microUSB v2.0 | microUSB v2.0 | microUSB v2.0 |
| GPS | Yes, with A-GPS, GLONASS, Beidou | Yes, with A-GPS, GLONASS | Yes, with A-GPS, GLONASS |
| Browser | HTML5 | HTML | HTML |
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| Internal | 8 GB, 1 GB RAM | 8 GB, 1 GB RAM - J110M, J111F 4 GB, 768 MB RAM - J110F, J1 |
8 GB, 1 GB RAM |
| Expandable Storage | microSD, up to 128 GB | microSD, up to 128 GB | microSD, up to 128 GB |
| USB OTG | - | - | Not 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 | 2500 mAh | 1900 mAh | 2050 mAh |
| Stand by | Up to 864 h (2G) Up to 864 h (3G) |
- | - |
| Talk Time | Up to 26 h 30 min (2G) Up to 17 h 30 min (3G) |
- | - |
