Phone Comparison - Apple iPhone 3GS vs Samsung Galaxy Core 2 Duos vs Xiaomi Mi 4i
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| Manufacturer | Apple | Samsung | Xiaomi |
| Announced | June 2009 | June 2014 | April 2015 |
| Status | Available - June 2009 | Available - July 2014 | Available - April 2015 |
| Price | - | - | Rs. 8,999 ($132.34) [Similarly Priced] |
| Colors | Black, White | White, Black | Black, White, Blue, Yellow, Pink |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
115.5 x 62.1 x 12.3 mm (4.55 x 2.44 x 0.48 in) |
130.3 x 68 x 9.8 mm (5.13 x 2.68 x 0.39 in) |
138.1 x 69.6 x 7.8 mm (5.44 x 2.74 x 0.31 in) |
| Weight | 135 g (4.76 oz) | 138 g (4.87 oz) | 130 g (4.59 oz) |
| 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 / 1900 / 2100 | HSDPA 900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 |
| 4G Network | - | - | LTE |
| Messaging | SMS, MMS | SMS, MMS, EMail, IM | SMS, MMS, EMail, IM |
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| OS | iPhone OS 3, upgradable to iOS 5 | Android OS, v4.4.2 (KitKat) | Android OS, v5.0 (Lollipop) |
| Processor | 600 MHz Cortex-A8 | Quad-core 1.2 GHz | Quad-core 1.7 GHz Cortex-A53 & quad-core 1.0 GHz Cortex-A53, Qualcomm MSM8939 Snapdragon 615 |
| GPU | PowerVR SGX535 | - | Adreno 405 |
| RAM | 256 MB | 768 MB | 2 GB |
| Internal Memory | 8/16/32 GB storage | 4 GB | 16/32 GB |
| External Memory | No | microSD, up to 64 GB | No |
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| Type | TFT capacitive touchscreen | TFT capacitive touchscreen | IPS LCD capacitive touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 3.5 inches | 4.5 inches | 5.0 inches |
| Resolution | 320 x 480 pixels (165 ppi) | 480 x 800 pixels (207 ppi) | 1080 x 1920 pixels (441 ppi) |
| Screen-to-Body Ratio | 50.75% | 65.25% | 71.57% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | No | FM Radio | FM radio |
| Games | Yes | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 3.15 MP, 2048x1536 pixels | 5 MP, 2592 х 1944 pixels | 13 MP, 4128 x 3096 pixels |
| Flash | No | LED flash | LED flash |
| Features | Auto focus, Touch Focus, Geo-tagging | Auto focus, Geo-tagging, Touch Focus, Face And Smile Detection | Auto focus, Geo-tagging, Touch Focus, Face/smile Detection, Panorama, HDR |
| Video | Yes, VGA@30fps, video geo-tagging | Yes | 1080p@30fps |
| Front Camera | No [Similar] | Yes, VGA [Similar] | 5 MP [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSDPA, 7.2 Mbps | HSDPA, 21 Mbps; HSUPA, 5.76 Mbps | HSPA, LTE |
| Bluetooth | Yes, v2.1 with A2DP, headset support only | Yes, v4.0 with A2DP | v4.0, A2DP |
| Wi-Fi | Wi-Fi 802.11b/g | Wi-Fi 802.11 b/g/n, Wi-Fi hotspot | Wi-Fi 802.11 a/b/g/n, dual-band, hotspot |
| USB | Yes, v2.0 | Yes, microUSB v2.0 | microUSB v2.0 |
| GPS | Yes, with A-GPS support | Yes, with A-GPS support and GLONASS | Yes, with A-GPS, GLONASS |
| Browser | HTML (Safari) | HTML | HTML5 |
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| Internal | 8/16/32 GB storage, 256 MB RAM | 4 GB, 768 MB RAM | 16/32 GB, 2 GB RAM |
| Expandable Storage | No | microSD, up to 64 GB | 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 | Standard battery, Li-Ion | Li-Ion Battery | Li-Po Battery |
| Capacity | 2000 mAh | 3120 mAh | |
| Stand by | Up to 300 h | - | - |
| Talk Time | Up to 12 h (2G) Up to 5 h (3G) |
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