Phone Comparison - Xiaomi Mi 3 vs Xiaomi Mi 4i vs Xiaomi Redmi 4A
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| Manufacturer | Xiaomi | Xiaomi | Xiaomi |
| Announced | September 2013 | April 2015 | November 2016 |
| Status | Available - December 2013 | Available - April 2015 | Available - November 2016 |
| Price | - | Rs. 8,999 ($132.34) [Similarly Priced] | Rs. 5,999 ($92.00) [Similarly Priced] |
| Colors | Various | Black, White, Blue, Yellow, Pink | Gold, Rose Gold, Dark Gray |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
144 x 73.6 x 8.1 mm (5.67 x 2.9 x 0.32 in) |
138.1 x 69.6 x 7.8 mm (5.44 x 2.74 x 0.31 in) |
139.5 x 70.4 x 8.5 mm (5.49 x 2.77 x 0.33 in) |
| Weight | 145 g (5.11 oz) | 130 g (4.59 oz) | 131.5 g (4.62.0.18 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 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA2000 1xEV-DO |
| 3G Network | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 850 / 1900 / 2100 |
| 4G Network | - | LTE | LTE band 1(2100), 3(1800), 7(2600), 38(2600), 39(1900), 40(2300), 41(2500) |
| Messaging | SMS, MMS, EMail, IM | SMS, MMS, EMail, IM | SMS, MMS, EMail, IM |
| Build Features | - | - | - Metal Body - Infrared Sensor |
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| OS | Android OS, v4.4 (KitKat) optimized with MIUI version 5 | Android OS, v5.0 (Lollipop) | Android OS, v6.0.1 (Marshmallow) |
| Processor | Quad-core 2.3 GHz Krait 400, Qualcomm MSM8274AB Snapdragon 800 | Quad-core 1.7 GHz Cortex-A53 & quad-core 1.0 GHz Cortex-A53, Qualcomm MSM8939 Snapdragon 615 | Quad-core 1.4 GHz Cortex-A53, Qualcomm MSM8917 Snapdragon 425 |
| GPU | Adreno 330 | Adreno 405 | Adreno 308 |
| RAM | 2 GB | 2 GB | 2 GB |
| Internal Memory | 16/64 GB | 16/32 GB | 16 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) | 720 x 1280 pixels (294 ppi) |
| Screen-to-Body Ratio | 64.90% | 71.57% | 70.04% |
| 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 | LED Flash |
| Features | Auto focus, Geo-tagging, Touch Focus, Face And Smile Detection, Image Stabilization, HDR | Auto focus, Geo-tagging, Touch Focus, Face/smile Detection, Panorama, HDR | Phase Detection Autofocus, f/2.2, Geo-tagging, Touch Focus, Face/smile Detection, HDR, Panorama |
| Video | 1080p@30fps, HDR | 1080p@30fps | 1080p@30fps |
| Front Camera | 2 MP, 1080p@30fps [Similar] | 5 MP [Similar] | 5 MP, f/2.2, 1080p@30fps [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 | HSPA, LTE | HSPA, LTE, EV-DO Rev.A 3.1 Mbps, VoLTE |
| Bluetooth | v4.0, A2DP | v4.0, A2DP | v4.1, A2DP |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, Wi-Fi hotspot | Wi-Fi 802.11 a/b/g/n, dual-band, hotspot | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot |
| USB | microUSB v2.0 (MHL), USB On-the-go | microUSB v2.0 | microUSB v2.0 |
| 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, 2 GB RAM | 16/32 GB, 2 GB RAM | 16 GB, 2 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 | 3050 mAh | 3120 mAh | 3120 mAh |
| Stand by | Up to 500 h | - | - |
| Talk Time | Up to 4 h | - | - |
