Phone Comparison - Samsung Galaxy Ace vs Motorola Moto Maxx vs Xiaomi Redmi Note 2
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| Manufacturer | Samsung | Motorola | Xiaomi |
| Announced | January 2011 | November 2014 | August 2015 |
| Status | Available - February 2011 | Available - November 2014 | Available - August 2015 |
| Price | - | Rs. 16,990 ($249.85) [Similarly Priced] | Rs. 9,700 ($141.99) [Similarly Priced] |
| Colors | Black, Hugo Boss Edition | Black Ballistic Nylon | Black, White, Yellow, Mint Green, Blue |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
112.4 x 59.9 x 11.5 mm (4.43 x 2.36 x 0.45 in) |
143.5 x 73.3 x 8.3 - 11.2 (5.65 x 2.89 x 0.33 - 0.44) |
152 x 76 x 8.3 mm (5.98 x 2.99 x 0.33 in) |
| Weight | 113 g (3.99 oz) | 176 g (6.21 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 700 / 1700 / 1800 / 2100 / 2600 (Bands 2, 3, 4, 7, 17) | LTE band 1(2100), 3(1800), 7(2600), 38(2600), 39(1900), 40(2300), 41(2500) |
| Messaging | SMS, MMS | SMS, MMS, EMail, IM | SMS, MMS, EMail, IM |
| Build Features | - | Splash Resistant, Moto Display | - |
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| OS | Android OS, v2.2 (Froyo), upgradable to v2.3 | Android OS, v4.4.4 (KitKat), planned upgrade to v5.0 (Lollipop) | Android OS, v5.0 (Lollipop) based MIUI 7 |
| Processor | 800 MHz ARM 11 processor, Qualcomm MSM7227 chipset | Quad-core 2.7 GHz Krait 450, Qualcomm Snapdragon 805 | Octa-core 2.0 GHz Cortex-A53, Mediatek MT6795 |
| GPU | Adreno 200 | Adreno 420 | PowerVR G6200 |
| RAM | N/A | 3 GB | 2 GB |
| Internal Memory | 158 MB storage | 64 GB | 16 GB |
| External Memory | microSD, up to 32GB, 2GB included, 280MB RAM | No | Yes |
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| Type | TFT capacitive touchscreen | OLED Capacitive Touchscreen, Corning Gorilla Glass 3 | IPS LCD capacitive touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 3.5 inches | 5.2 inches | 5.5 inches |
| Resolution | 320 x 480 pixels (165 ppi) | 1440 x 2560 pixels (565 ppi) | 1080 x 1920 pixels (401 ppi) |
| Screen-to-Body Ratio | 54.06% | - | 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 | 21 MP (5248 x 3936), autofocus | 13 MP, 4128 x 3096 pixels |
| Flash | LED flash | dual-LED flash | LED flash |
| Features | Auto focus, Geo-tagging, Face And Smile Detection | Geo-tagging, Touch Focus, Face Detection, Panorama, HDR | Phase Detection Auto focus (PDAF), Geo-tagging, Touch Focus, Face/smile Detection, HDR |
| Video | Yes, QVGA@15fps | 2160p@24fps, 1080p@30fps | 1080p@30fps |
| Front Camera | No [Similar] | 2 MP, 1080p [Similar] | 5 MP [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSDPA, 7.2 Mbps | HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps | TD-SCDMA |
| Bluetooth | Yes, v2.1 with A2DP | v4.0, A2DP, LE | v4.0, A2DP, LE |
| Wi-Fi | Wi-Fi 802.11 b/g/n, DLNA, Wi-Fi hotspot | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, DLNA, Wi-Fi hotspot | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot |
| USB | Yes, v2.0 microUSB | microUSB v2.0 | microUSB v2.0, USB Host |
| GPS | Yes, with A-GPS support | Yes, with A-GPS, GLONASS | Yes, with A-GPS, GLONASS |
| Browser | HTML | HTML5 | HTML5 |
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| Internal | 158 MB storage | 64 GB, 3 GB RAM | 16 GB, 2 GB RAM |
| Expandable Storage | microSD, up to 32GB, 2GB included, 280MB RAM | No | Yes |
| USB OTG | - | - | 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 | Non-removable Li-Po Battery | Li-Po Battery |
| Capacity | 1350 mAh | 3900 mAh | 3060 mAh |
| Stand by | Up to 640 h (2G) Up to 420 h (3G) |
- | - |
| Talk Time | Up to 11 h (2G) Up to 6 h 30 min (3G) |
- | - |
