Phone Comparison - Samsung Galaxy Ace 2 vs Samsung I9500 Galaxy S4 vs Xiaomi Redmi Note 2
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| Manufacturer | Samsung | Samsung | Xiaomi |
| Announced | February 2012 | March 2013 | August 2015 |
| Status | Available - May 2012 | Available - April 2013 | Available - August 2015 |
| Price | - | - | Rs. 9,700 ($141.99) [Similarly Priced] |
| Colors | Black | White Frost, Black Mist | Black, White, Yellow, Mint Green, Blue |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
118.3 x 62.2 x 10.5 mm (4.66 x 2.45 x 0.41 in) |
136.6 x 69.8 x 7.9 mm (5.38 x 2.75 x 0.31 in) |
152 x 76 x 8.3 mm (5.98 x 2.99 x 0.33 in) |
| Weight | 122 g (4.3 oz) | 130 g (4.59 oz) | 160 g (5.64 oz) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 | GSM 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 3G Network | HSDPA 900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 850 / 900 / 1900 / 2100, TD-SCDMA |
| 4G Network | - | LTE (Dependent on Country) | 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 |
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| OS | Android OS, v2.3 | Android OS, v4.2.2 (Jelly Bean) | Android OS, v5.0 (Lollipop) based MIUI 7 |
| Processor | Dual-core 800 MHz, NovaThor U8500 | Quad-core 1.6 GHz Cortex-A15 & quad-core 1.2 GHz Cortex-A7, Exynos 5 Octa 5410 | Octa-core 2.0 GHz Cortex-A53, Mediatek MT6795 |
| GPU | Mali-400MP | PowerVR SGX 544MP3 | PowerVR G6200 |
| RAM | 768 MB | 2 GB | 2 GB |
| Internal Memory | 4 GB storage | 16/32/64 GB storage | 16 GB |
| External Memory | microSD, up to 32GB | microSD, up to 64 GB | Yes |
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| Type | PLS TFT capacitive touchscreen | Super AMOLED capacitive touchscreen | IPS LCD capacitive touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 3.8 inches | 5.0 inches | 5.5 inches |
| Resolution | 480 x 800 pixels (246 ppi) | 1080 x 1920 pixels (441 ppi) | 1080 x 1920 pixels (401 ppi) |
| Screen-to-Body Ratio | 55.64% | 72.15% | 72.02% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | Stereo FM radio with RDS | No | FM radio |
| Games | Yes | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 5 MP, 2592x1944 pixels | 13 MP, 4128 x 3096 pixels | 13 MP, 4128 x 3096 pixels |
| Flash | LED flash | LED flash | LED flash |
| Features | Auto focus, Geo-tagging, Face And Smile Detection | Auto focus, Dual Shot, Simultaneous HD Video And Image Recording, Geo-tagging, Touch Focus, Face And Smile Detection, Image Stabilization, HDR | Phase Detection Auto focus (PDAF), Geo-tagging, Touch Focus, Face/smile Detection, HDR |
| Video | Yes, 720p@30fps | Yes, 1080p@30fps, dual-video rec. | 1080p@30fps |
| Front Camera | Yes, VGA [Similar] | Yes, 2 MP,1080p@30fps, dual video call [Similar] | 5 MP [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSDPA, 14.4 Mbps | HSDPA, 42.2 Mbps; HSUPA, 5.76 Mbps | TD-SCDMA |
| Bluetooth | Yes, v3.0 with A2DP | Yes, v4.0 with A2DP, EDR, LE | v4.0, A2DP, LE |
| Wi-Fi | Wi-Fi 802.11 b/g/n, DLNA, Wi-Fi Direct, Wi-Fi hotspot | Wi-Fi 802.11 a/b/g/n/ac, dual-band, DLNA, Wi-Fi Direct, Wi-Fi hotspot | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot |
| USB | Yes, v2.0 microUSB | Yes, microUSB v2.0 (MHL 2), USB On-the-go, USB Host | microUSB v2.0, USB Host |
| GPS | Yes, with A-GPS support and GLONASS | Yes, with A-GPS support and GLONASS | Yes, with A-GPS, GLONASS |
| Browser | HTML | HTML5, Adobe Flash | HTML5 |
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| Internal | 4 GB storage, 768 MB RAM | 16/32/64 GB storage, 2 GB RAM | 16 GB, 2 GB RAM |
| Expandable Storage | microSD, up to 32GB | microSD, up to 64 GB | Yes |
| 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 | Standard battery, Li-Ion | Li-Ion Battery | Li-Po Battery |
| Capacity | 1500 mAh | 2600 mAh | 3060 mAh |
| Stand by | Up to 670 h (2G) Up to 640 h (3G) |
Up to 350 h | - |
| Talk Time | Up to 16 h 20 min (2G) Up to 7 h 30 min (3G) |
Up to 17 h | - |
