Phone Comparison - Xiaomi Redmi 2 vs Xiaomi Mi 4i vs Xiaomi Mi 4c
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| Manufacturer | Xiaomi | Xiaomi | Xiaomi |
| Announced | January 2015 | April 2015 | September 2015 |
| Status | Available - January 2015 | Available - April 2015 | Available - September 2015 |
| Price | Rs. 5,999 ($88.22) [Similarly Priced] | Rs. 8,999 ($132.34) [Similarly Priced] | Rs. 7,500 ($110.00) [Similarly Priced] |
| Colors | Black, White, Yellow, Pink, Green | Black, White, Blue, Yellow, Pink | Black, White, Blue, Yellow, Pink |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
134 x 67.2 x 9.4 mm (5.28 x 2.65 x 0.37 in) |
138.1 x 69.6 x 7.8 mm (5.44 x 2.74 x 0.31 in) |
138.1 x 69.6 x 7.8 mm (5.44 x 2.74 x 0.31 in) |
| Weight | 133 g (4.69 oz) | 130 g (4.59 oz) | 132 g (4.66 oz) |
| 2G Network | GSM 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 TD-SCDMA 1900 / 2000 |
| 3G Network | HSDPA 850 / 1900 / 2100 TD-SCDMA 1900 / 2100 |
HSDPA 850 / 900 / 1900 / 2100 | HSDPA 850 / 1900 / 2100 TD-SCDMA 1900 / 2000 |
| 4G Network | LTE 1800 / 2600 TD-LTE 1900 / 2300 / 2500 / 2600 (Bands 3, 7, 38, 39, 40, 41) | LTE | LTE band 1(2100), 3(1800), 38(2600), 39(1900), 40(2300), 41(2500) |
| Messaging | SMS, MMS, EMail, IM | SMS, MMS, EMail, IM | SMS, MMS, EMail, IM |
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| OS | Android OS, v4.4 (KitKat) | Android OS, v5.0 (Lollipop) | Android OS, v5.1.1 (Lollipop) |
| Processor | Quad-core 1.2 GHz Cortex-A53, Qualcomm MSM8916 Snapdragon 410 | Quad-core 1.7 GHz Cortex-A53 & quad-core 1.0 GHz Cortex-A53, Qualcomm MSM8939 Snapdragon 615 | Quad-core 1.44 GHz Cortex-A53 & dual-core 1.82 GHz Cortex-A57, Qualcomm MSM8992 Snapdragon 808 |
| GPU | Adreno 306 | Adreno 405 | Adreno 418 |
| RAM | 1 GB | 2 GB | 2/3 GB |
| Internal Memory | 8 GB | 16/32 GB | 16/32 GB |
| External Memory | microSD, up to 32 GB | No | No |
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| Type | IPS LCD Capacitive Touchscreen | IPS LCD capacitive touchscreen | IPS LCD Capacitive Touchscreen, Corning Scratch-Resistant Glass |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 4.7 inches | 5.0 inches | 5.0 inches |
| Resolution | 720 x 1280 pixels (312 ppi) | 1080 x 1920 pixels (441 ppi) | 1080 x 1920 pixels (441 ppi) |
| Screen-to-Body Ratio | 67.83% | 71.57% | 71.57% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | FM 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 | 13 MP, 4128 x 3096 pixels | 13 MP, 4128 x 3096 pixels |
| Flash | LED flash | LED flash | Dual-LED (dual tone) |
| Features | Auto focus, Geo-tagging, Touch Focus, Face Detection, HDR, Sony Sensor, Panorama, Real-time HDR | Auto focus, Geo-tagging, Touch Focus, Face/smile Detection, Panorama, HDR | Auto focus, Geo-tagging, Touch Focus, Face/smile Detection, Panorama, HDR |
| Video | Yes, 1080p | 1080p@30fps | 1080p@30fps, 480p@120fps |
| Front Camera | 2 MP, 720p [Similar] | 5 MP [Similar] | 5 MP [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSPA, LTE Cat4 150/50 Mbps | HSPA, LTE | HSPA, LTE Cat4 150/50 Mbps |
| Bluetooth | v4.0, A2DP | v4.0, A2DP | v4.1, A2DP |
| Wi-Fi | Wi-Fi 802.11 b/g/n, hotspot | Wi-Fi 802.11 a/b/g/n, dual-band, hotspot | Wi-Fi 802.11 a/b/g/n/ac, dual-band, WiFi Direct, hotspot |
| USB | microUSB v2.0 | microUSB v2.0 | microUSB v2.0, USB Host |
| GPS | Yes, with A-GPS, GLONASS, Beidou | Yes, with A-GPS, GLONASS | Yes, with A-GPS, GLONASS, Beidou |
| Browser | HTML5 | HTML5 | HTML5 |
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| Internal | 8 GB, 1 GB RAM / 16 GB, 2 GB RAM | 16/32 GB, 2 GB RAM | 16/32 GB, 2/3 GB RAM |
| Expandable Storage | microSD, up to 32 GB | No | No |
| USB OTG | - | - | 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-Po Battery | Li-Po Battery | Non-removable Li-Ion Battery |
| Capacity | 2200 mAh | 3120 mAh | 3080 mAh |
| Stand by | - | - | - |
| Talk Time | - | - | - |
