Phone Comparison - Samsung Galaxy Tab S 8.4 vs Apple iPad Air 2 vs Xiaomi Mi 4i
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| Manufacturer | Samsung | Apple | Xiaomi |
| Announced | June 2014 | October 2014 | April 2015 |
| Status | Available - July 2014 | Available - October 2014 | Available - April 2015 |
| Price | - | Rs. 30,150 ($443.38) [Similarly Priced] | Rs. 8,999 ($132.34) [Similarly Priced] |
| Colors | White, Black | Space Gray, Silver, Gold | Black, White, Blue, Yellow, Pink |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
212.8 x 125.6 x 6.6 mm (8.38 x 4.94 x 0.26 in) |
240 x 169.5 x 6.1 mm (9.45 x 6.67 x 0.24 in) |
138.1 x 69.6 x 7.8 mm (5.44 x 2.74 x 0.31 in) |
| Weight | 294 g (10.37 oz) | 437 g / 444 g (15.41 oz / 15.66 oz) | 130 g (4.59 oz) |
| 2G Network | No | GSM 850 / 900 / 1800 / 1900 CDMA2000 1xEV-DO |
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 3G Network | No | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 |
| 4G Network | - | LTE | LTE |
| Messaging | SMS, MMS, Push Mail, EMail, IM | , Push Mail, EMail, IM | SMS, MMS, EMail, IM |
| Build Features | Fingerprint sensor | - Fingerprint sensor (Touch ID) | - |
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| OS | Android OS, v4.4.2 (KitKat) | iOS 8.1 | Android OS, v5.0 (Lollipop) |
| Processor | Quad-core 1.9 GHz Cortex-A15 & quad-core 1.3 GHz Cortex-A7, Exynos 5 Octa 5420 | Dual-core 1.3 GHz Cyclone (ARM v8-based), Apple A8X | Quad-core 1.7 GHz Cortex-A53 & quad-core 1.0 GHz Cortex-A53, Qualcomm MSM8939 Snapdragon 615 |
| GPU | Mali-T628 MP6 | PowerVR G6430 (quad-core graphics) | Adreno 405 |
| RAM | 3 GB | 1 GB | 2 GB |
| Internal Memory | 32/64 GB | 16/64/128 GB | 16/32 GB |
| External Memory | microSD, up to 128 GB | No | No |
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| Type | Super AMOLED capacitive touchscreen | LED-backlit IPS LCD, capacitive touchscreen | IPS LCD capacitive touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 8.4 inches | 9.7 inches | 5.0 inches |
| Resolution | 1600 x 2560 pixels (359 ppi) | 1536 x 2048 pixels (264 ppi) | 1080 x 1920 pixels (441 ppi) |
| Screen-to-Body Ratio | 76.71% | 71.58% | 71.57% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | No | No | 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, 3264 x 2448 pixels | 13 MP, 4128 x 3096 pixels |
| Flash | LED flash | No | LED flash |
| Features | Auto focus, Geo-tagging | Auto focus, 1.12µm Pixel Size, Geo-tagging, Touch Focus, Face/smile Detection, HDR (photo/panorama) | Auto focus, Geo-tagging, Touch Focus, Face/smile Detection, Panorama, HDR |
| Video | Yes, 1080p@30fps | 1080p@30fps | 1080p@30fps |
| Front Camera | Yes, 2.1 MP [Similar] | 1.2 MP, 720p@30fps, face detection, Face [Similar] | 5 MP [Similar] |
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| GPRS | No | Yes | Yes |
| Edge | No | Yes | Yes |
| 3G | No | DC-HSDPA, 42 Mbps; HSDPA, 21 Mbps; HSUPA, 5.76 Mbps, LTE, 150 Mbps; EV-DO Rev. A, up to 3.1 Mbps | HSPA, LTE |
| Bluetooth | Yes, v4.0 with A2DP, LE | v4.0, A2DP, EDR | 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 a/b/g/n/ac, dual-band, Wi-Fi hotspot | Wi-Fi 802.11 a/b/g/n, dual-band, hotspot |
| USB | Yes, microUSB v2.0 | v2.0 | microUSB v2.0 |
| GPS | Yes, with A-GPS support and GLONASS | Yes, with A-GPS, GLONASS | Yes, with A-GPS, GLONASS |
| Browser | HTML5 | HTML5 (Safari) | HTML5 |
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| Internal | 32/64 GB, 3 GB RAM | 16/64/128 GB, 1 GB RAM DDR3 | 16/32 GB, 2 GB RAM |
| Expandable Storage | microSD, up to 128 GB | No | No |
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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 | Non-removable Li-Po Battery (32.4 Wh) | Li-Po Battery |
| Capacity | 4900 mAh | 8600 mAh | 3120 mAh |
| Stand by | - | - | - |
| Talk Time | - | Up to 10 h (multimedia) | - |
