Phone Comparison - Apple iPhone 4S vs Xiaomi Mi Pad 7.9 vs Xiaomi Redmi Note 2
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| Manufacturer | Apple | Xiaomi | Xiaomi |
| Announced | October 2011 | March 2014 | August 2015 |
| Status | Available - October 2011 | Available - June 2014 | Available - August 2015 |
| Price | - | - | Rs. 9,700 ($141.99) [Similarly Priced] |
| Colors | Black, White | Blue, Green, Yellow, Pink, White, Gray | Black, White, Yellow, Mint Green, Blue |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
115.2 x 58.6 x 9.3 mm (4.54 x 2.31 x 0.37 in) |
202 x 135.4 x 8.5 mm (7.95 x 5.33 x 0.33 in) |
152 x 76 x 8.3 mm (5.98 x 2.99 x 0.33 in) |
| Weight | 140 g (4.94 oz) | 360 g (12.7 oz) | 160 g (5.64 oz) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 CDMA2000 1xEV-DO |
No | GSM 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 3G Network | HSDPA 850 / 900 / 1900 / 2100 | No | HSDPA 850 / 900 / 1900 / 2100, TD-SCDMA |
| 4G Network | - | - | LTE band 1(2100), 3(1800), 7(2600), 38(2600), 39(1900), 40(2300), 41(2500) |
| Messaging | SMS, MMS, Push Mail, EMail, IM | , EMail, IM | SMS, MMS, EMail, IM |
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| OS | iOS 5 | Android OS, v4.4 (KitKat) | Android OS, v5.0 (Lollipop) based MIUI 7 |
| Processor | 1 GHz dual-core ARM Cortex-A9 processor, Apple A5 chipset | Quad-core 2.2 GHz Cortex-A15, Nvidia Tegra K1 | Octa-core 2.0 GHz Cortex-A53, Mediatek MT6795 |
| GPU | PowerVR SGX543MP2 | ULP GeForce Kepler (192 cores) | PowerVR G6200 |
| RAM | 512 MB | 2 GB | 2 GB |
| Internal Memory | 16/32/64 GB storage | 16/64 GB | 16 GB |
| External Memory | No | microSD, up to 128 GB | Yes |
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| Type | LED-backlit IPS TFT | IPS LCD capacitive touchscreen | IPS LCD capacitive touchscreen |
| Colors | capacitive touchscreen | 16M colors | 16M colors |
| Size | 3.5 inches | 7.9 inches | 5.5 inches |
| Resolution | 640 x 960 pixels (330 ppi) | 1536 x 2048 pixels (324 ppi) | 1080 x 1920 pixels (401 ppi) |
| Screen-to-Body Ratio | 53.92% | 70.69% | 72.02% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | No | No | FM radio |
| Games | Downloadable, incl. motion-bas | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 8 MP, 3264x2448 pixels | 8 MP, 3264 x 2448 pixels | 13 MP, 4128 x 3096 pixels |
| Flash | LED flash | No | LED flash |
| Features | Auto focus, Touch Focus, Geo-tagging, Face Detection, HDR | - | Phase Detection Auto focus (PDAF), Geo-tagging, Touch Focus, Face/smile Detection, HDR |
| Video | Yes, 1080p@30fps, LED video light, video stabilization, geo-tagging | 1080p | 1080p@30fps |
| Front Camera | Yes, VGA [Similar] | 5 MP [Similar] | 5 MP [Similar] |
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| GPRS | Yes | No | Yes |
| Edge | Yes | No | Yes |
| 3G | HSDPA, 14.4 Mbps; HSUPA, 5.8 Mbps | No | TD-SCDMA |
| Bluetooth | Yes, v4.0 with A2DP | v4.0 | v4.0, A2DP, LE |
| Wi-Fi | Wi-Fi 802.11 b/g/n, Wi-Fi hotspot | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, Wi-Fi hotspot | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot |
| USB | Yes, v2.0 | microUSB v2.0, USB On-the-go | microUSB v2.0, USB Host |
| GPS | Yes, with A-GPS support and GLONASS | No | Yes, with A-GPS, GLONASS |
| Browser | HTML (Safari) | HTML5 | HTML5 |
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| Call Records | 100 received, dialed and missed calls | Practically unlimited | Practically unlimited |
| Internal | 16/32/64 GB storage, 512 MB RAM | 16/64 GB, 2 GB RAM | 16 GB, 2 GB RAM |
| Expandable Storage | No | microSD, up to 128 GB | Yes |
| USB OTG | - | Supported | 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 | Standard battery, Li-Po | Li-Po Battery | Li-Po Battery |
| Capacity | 1432 mAh | 6700 mAh | 3060 mAh |
| Stand by | Up to 200 h (2G) Up to 200 h (3G) |
- | - |
| Talk Time | Up to 14 h (2G) Up to 8 h (3G) |
Up to 11 h (multimedia) | - |
