Phone Comparison - Xiaomi Mi 4 vs Xiaomi Mi 4i vs Xiaomi Redmi 4
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| Manufacturer | Xiaomi | Xiaomi | Xiaomi |
| Announced | July 2014 | April 2015 | November 2016 |
| Status | Available - Q3 2014 | Available - April 2015 | Available - November 2016 |
| Price | - | Rs. 8,999 ($132.34) [Similarly Priced] | Rs. 8,900 ($133.00) [Similarly Priced] |
| Colors | Black, White | Black, White, Blue, Yellow, Pink | Dark Gray, Silver, Gold |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
139.2 x 68.5 x 8.9 mm (5.48 x 2.7 x 0.35 in) |
138.1 x 69.6 x 7.8 mm (5.44 x 2.74 x 0.31 in) |
141.3 x 69.6 x 8.9 mm (5.56 x 2.74 x 0.35 in) |
| Weight | 149 g (5.26 oz) | 130 g (4.59 oz) | 156 g (5.5 oz) |
| SIM Type | - | - | Dual SIM Hybrid (Nano SIM + Micro SIM, or Micro SIM + microSD Card) |
| 2G Network | 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 / 1900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 / 800 - Taiwan |
| 4G Network | LTE | LTE | LTE band 1(2100), 2(1900), 3(1800), 5(850), 7(2600), 8(900), 18(800), 19(800), 26(850), 28(700), 38(2600), 39(1900), 40(2300), 41(2500) - Taiwan |
| Messaging | SMS, MMS, EMail, IM | SMS, MMS, EMail, IM | SMS, MMS, Push Mail, EMail, IM |
| Build Features | - | - | - Fingerprint Sensor - Infrared Sensor - Metal Build - 2.5D Curved Glass |
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| OS | Android OS, v4.4.3 (KitKat) | Android OS, v5.0 (Lollipop) | Android OS, v6.0.1 (Marshmallow) |
| Processor | Quad-core 2.5 GHz Krait 400, Qualcomm MSM8974AC Snapdragon 801 | Quad-core 1.7 GHz Cortex-A53 & quad-core 1.0 GHz Cortex-A53, Qualcomm MSM8939 Snapdragon 615 | Octa-core 2.0 GHz Cortex-A53, Qualcomm MSM8953 Snapdragon 625 |
| GPU | Adreno 330 | Adreno 405 | Adreno 506 |
| RAM | 3 GB | 2 GB | 3 GB |
| Internal Memory | 16/64 GB | 16/32 GB | 32 GB |
| External Memory | No | No | microSD, up to 128 GB (uses SIM 2 slot) |
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| Type | IPS LCD capacitive touchscreen | IPS LCD capacitive touchscreen | IPS LCD Capacitive Touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 5.0 inches | 5.0 inches | 5.0 inches |
| Resolution | 1080 x 1920 pixels (441 ppi) | 1080 x 1920 pixels (441 ppi) | 1080 x 1920 pixels (441 ppi) |
| Screen-to-Body Ratio | 72.14% | 71.57% | 69.95% |
| 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 | 13 MP, 4128 x 3096 pixels | 13 MP, 4128 x 3096 pixels | 13 MP, 4160 x 3120 pixels |
| Flash | Dual-LED Flash | LED flash | Dual-LED (dual Tone) |
| Features | Auto focus, 1/3' Sensor Size, 1.12µm Pixel Size, Geo-tagging, Touch Focus, Face And Smile Detection, HDR | Auto focus, Geo-tagging, Touch Focus, Face/smile Detection, Panorama, HDR | Phase Detection Autofocus, f/2.2 aperture, Geo-tagging, Touch Focus, Face Detection, Panorama, HDR |
| Video | 2160p, 1080p@30fps, HDR | 1080p@30fps | 1080p@30fps |
| Front Camera | 8 MP, 1080p@30fps [Similar] | 5 MP [Similar] | 5 MP [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | DC-HSDPA, 42 Mbps; HSDPA, 21 Mbps; HSUPA, 5.76 Mbps; LTE | HSPA, LTE | HSPA 42.2/5.76 Mbps, LTE Cat6 300/50 Mbps, VoLTE |
| Bluetooth | v4.0, A2DP | v4.0, A2DP | v4.2, A2DP, EDR, LE |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, DLNA, Wi-Fi hotspot | Wi-Fi 802.11 a/b/g/n, dual-band, hotspot | Wi-Fi 802.11 a/b/g/n/ac, Wi-Fi Direct, hotspot |
| USB | microUSB v2.0 (MHL), USB On-the-go | microUSB v2.0 | microUSB v2.0, USB OTG |
| GPS | Yes, with A-GPS, GLONASS | Yes, with A-GPS, GLONASS | Yes, with A-GPS, GLONASS, BDS |
| Browser | HTML5 | HTML5 | HTML5 |
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| Internal | 16/64 GB, 3 GB RAM | 16/32 GB, 2 GB RAM | 32 GB, 3 GB RAM |
| Expandable Storage | No | No | microSD, up to 128 GB (uses SIM 2 slot) |
| 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 | Non-removable Li-Ion Battery | Li-Po Battery | Non-removable Li-Ion Battery |
| Capacity | 3080 mAh | 3120 mAh | 4100 mAh |
| Stand by | - | - | - |
| Talk Time | - | - | - |
