Phone Comparison - Nokia Lumia 638 vs Samsung Galaxy Tab A 8.0 vs Samsung Galaxy Tab A 9.7
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| Manufacturer | Nokia | Samsung | Samsung |
| Announced | December 2014 | March 2015 | March 2015 |
| Status | Available - December 2014 | Available - May 2015 | Available - May 2015 |
| Price | Rs. 7,999 ($117.63) [Similarly Priced] | Rs. 13,630 ($199.99) [Similarly Priced] | Rs. 12,270 ($179.99) [Similarly Priced] |
| Colors | Black | Black/Silver | Black/Silver |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
129.5 x 66.7 x 9.2 mm (5.1 x 2.63 x 0.36 in) |
208.3 x 137.9 x 7.4 mm (8.2 x 5.43 x 0.29 in) |
242.5 x 166.8 x 7.5 mm (9.55 x 6.57 x 0.3 in) |
| Weight | 136 g (4.8 oz) | 313 g (11.04 oz) | 450 g (Wi-Fi) / 453 g (LTE) (15.87 oz (Wi-Fi) / 15.98 oz (LTE)) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 |
| 3G Network | HSDPA 850 / 900 / 1900 / 2100 | HSDPA | HSDPA |
| 4G Network | LTE 1800 / 1900 / 2100 / 2300 / 2500 / 2600 (Bands 3, 7, 38, 39, 40, 41) | LTE | LTE |
| Messaging | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, EMail, IM | SMS, MMS, EMail, IM |
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| OS | Microsoft Windows Phone 8.1 | Android OS, v5.0 (Lollipop) | Android OS, v5.0 (Lollipop) |
| Processor | Quad-core 1.2 GHz Cortex-A7, Qualcomm Snapdragon 400 | Quad-core 1.2 GHz | Quad-core 1.2 GHz |
| GPU | Adreno 305 | - | - |
| RAM | 1 GB | 2 GB | 2 GB |
| Internal Memory | 8 GB | 16 GB (Wi-Fi)/ 32 GB (LTE) | 16 GB (Wi-Fi)/ 32 GB (LTE) |
| 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 | TFT capacitive touchscreen | TFT capacitive touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 4.5 inches | 8.0 inches | 9.7 inches |
| Resolution | 480 x 854 pixels (218 ppi) | 768 x 1024 pixels (160 ppi) | 768 x 1024 pixels (132 ppi) |
| Screen-to-Body Ratio | 64.43% | 69.00% | 71.99% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | FM radio | - | - |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 5 MP, 2592 х 1944 pixels | 5 MP, 2592 х 1944 pixels | 5 MP, 2592 х 1944 pixels |
| Flash | No | No | No |
| Features | Auto focus, 1/4 | Auto focus, Geo-tagging | Auto focus, Geo-tagging |
| Video | Yes | Yes | Yes |
| Front Camera | No [Similar] | 2 MP [Similar] | 2 MP [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, LTE | HSPA, LTE |
| Bluetooth | v4.0, A2DP, LE/ apt-X after WP8 Denim update | v4.0 | v4.0 |
| Wi-Fi | Wi-Fi 802.11 b/g/n, DLNA, hotspot | Wi-Fi 802.11 a/b/g/n, dual-band, WiFi Direct, hotspot | Wi-Fi 802.11 a/b/g/n, dual-band, WiFi Direct, hotspot |
| USB | microUSB v2.0 | microUSB v2.0 | microUSB v2.0 |
| GPS | Yes, with A-GPS, GLONASS | Yes, with A-GPS, GLONASS | Yes, with A-GPS, GLONASS |
| Browser | HTML5 | HTML5 | HTML5 |
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| Internal | 8 GB, 1 GB RAM | 16 GB (Wi-Fi)/ 32 GB (LTE), 2 GB RAM | 16 GB (Wi-Fi)/ 32 GB (LTE), 2 GB RAM |
| Expandable Storage | microSD, up to 128 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 | Li-Ion Battery (BL-5H) | Non-removable Li-Ion Battery | Non-removable Li-Ion Battery |
| Capacity | 1830 mAh | 4200 mAh | 6000 mAh |
| Stand by | - | - | - |
| Talk Time | - | - | - |
