Phone Comparison - Apple iPhone 4 vs Samsung I9505 Galaxy S4 vs Xiaomi Mi A2 (Mi 6X)
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| Manufacturer | Apple | Samsung | Xiaomi |
| Announced | June 2010 | March 2013 | April 2018 |
| Status | Available - June 2010 | Available - April 2013 | Available - April 2018 |
| Price | - | - | Rs. 16,900 ($250.00) [Similarly Priced] |
| Colors | Black, White | White Frost, Black Mist | Cherry Pink, Flame Red, Sand Gold, Glacier Blue, Black |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
115.2 x 58.6 x 9.3 mm (4.54 x 2.31 x 0.37 in) |
136.6 x 69.8 x 7.9 mm (5.38 x 2.75 x 0.31 in) |
158.7 x 75.4 x 7.3 mm (6.25 x 2.97 x 0.29 in) |
| Weight | 137 g (4.83 oz) | 130 g (4.59 oz) | 168 g (5.93 oz) |
| SIM Type | - | - | Hybrid Dual SIM (Nano-SIM, dual stand-by) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA 800 & TD-SCDMA - China |
| 3G Network | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 |
| 4G Network | - | LTE | LTE band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500) - China |
| Messaging | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, EMail, IM | SMS, MMS, Push Mail, EMail, IM |
| Build Features | - | - | - Fingerprint Sensor |
| Notification LED | - | - | Yes |
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| OS | iOS 4, upgradable to iOS 5 | Android OS, v4.2.2 (Jelly Bean) | Android 8.1 (Oreo); Android One |
| Processor | 1 GHz Cortex-A8, Apple A4 | Quad-core 1.9 GHz Krait 300, Qualcomm APQ8064T Snapdragon 600 | Octa-core (4x2.2 GHz Kryo 260 & 4x1.8 GHz Kryo 260), Qualcomm SDM660 Snapdragon 660 |
| GPU | PowerVR SGX535 | Adreno 320 | Adreno 512 |
| RAM | 512 MB | 2 GB | 6 GB |
| Internal Memory | 8/16/32 GB storage | 16/32/64 GB storage | 128 GB |
| External Memory | No | microSD, up to 64 GB | microSD, up to 256 GB (uses SIM 2 slot) |
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| Type | LED-backlit IPS TFT, capacitive touchscreen | Super AMOLED capacitive touchscreen | LTPS IPS LCD Capacitive Touchscreen, Corning Gorilla Glass 3 |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 3.5 inches | 4.99 inches | 5.99 inches |
| Resolution | 640 x 960 pixels (330 ppi) | 1080 x 1920 pixels (441 ppi) | 1080 x 2160 pixels (403 ppi) |
| Screen-to-Body Ratio | 53.92% | 72.15% | 77.44% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | No | No | FM radio |
| Games | Yes + downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 5 MP, 2592 x 1944 pixels | 13 MP, 4128 x 3096 pixels, Autofocus | Dual 12 MP + 20 MP |
| Flash | LED flash | LED flash | LED Flash |
| Features | Auto focus, Touch Focus, Geo-tagging, HDR | Drama Shot, Eraser, Sound and Shot, Simultaneous HD Video And Image Recording, Geo-tagging, Touch Focus, Face And Smile Detection, Image Stabilization, HDR | Phase Detection Autofocus, 1.25µm, f/1.8 aperture lens, 2x Optical Zoom, Geo-tagging, Touch Focus, Face Detection, HDR, Panorama |
| Video | Yes, 720p@30fps, LED video light, geo-tagging | Yes, 1080p@30fps | 2160p@30fps, 1080p@30fps, 720p@120fps |
| Front Camera | Yes, videocalling over Wi-Fi only [Similar] | Yes, 2 MP, Full HD 1080p@30fps [Similar] | 20 MP (f/1.8, 1/2.8", 1.0µm), 1080p, Auto-HDR [Similar] |
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| GPRS | Class 10 (4+1/3+2 slots), 32 - 48 kbps | Yes | Yes |
| Edge | Class 10, 236.8 kbps | Yes | Yes |
| 3G | HSDPA, 7.2 Mbps; HSUPA, 5.76 Mbps | HSDPA, 42.2 Mbps; HSUPA, 5.76 Mbps; LTE, Cat3, 50 Mbps UL, 100 Mbps DL | HSPA, LTE |
| Bluetooth | Yes, v2.1 with A2DP | Yes, v4.0 with A2DP, EDR | 5.0, A2DP, LE |
| Wi-Fi | Wi-Fi 802.11 b/g/n, Wi-Fi hotspot | Wi-Fi 802.11 a/b/g/n, DLNA, Wi-Fi Direct, Wi-Fi hotspot | Wi-Fi 802.11 a/b/g/n/ac, dual-band, WiFi Direct, hotspot |
| USB | Yes, v2.0 | Yes, microUSB v2.0 (MHL), USB On-the-go | 2.0, Type-C 1.0 reversible connector |
| GPS | Yes, with A-GPS support | Yes, with A-GPS support and GLONASS | Yes, with A-GPS, GLONASS, BDS |
| Browser | HTML (Safari) | HTML5, Adobe Flash | HTML5 |
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| Internal | 8/16/32 GB storage, 512 MB RAM | 16/32/64 GB storage, 2 GB RAM | 128 GB, 6 GB RAM or 64 GB, 4/6 GB RAM |
| Expandable Storage | No | microSD, up to 64 GB | microSD, up to 256 GB (uses SIM 2 slot) |
| USB OTG | - | Supported | Not 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-Ion Battery | Non-removable Li-Ion Battery |
| Capacity | 1420 mAh | 2600 mAh | 3010 mAh |
| Stand by | Up to 300 h (2G) Up to 300 h (3G) |
Up to 350 h | - |
| Talk Time | Up to 14 h (2G) Up to 7 h (3G) |
Up to 17 h | - |
