Phone Comparison - Celkon AR40 vs Xiaomi Redmi 2 vs Micromax Canvas Unite 3 Q372
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| Manufacturer | Celkon | Xiaomi | Micromax |
| Announced | October 2013 | January 2015 | April 2015 |
| Status | Available - October 2013 | Available - January 2015 | Available - April 2015 |
| Price | - | Rs. 5,999 ($88.22) [Similarly Priced] | Rs. 6,200 ($91.18) [Similarly Priced] |
| Colors | Yellow | Black, White, Yellow, Pink, Green | White, Blue |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
126.2 x 64 x 10.8 mm (4.97 x 2.52 x 0.43 in) |
134 x 67.2 x 9.4 mm (5.28 x 2.65 x 0.37 in) |
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| Weight | 126.5 g (4.44.0.18 oz) | 133 g (4.69 oz) | - |
| 2G Network | GSM 900 / 1800 - SIM 1 & SIM 2 | GSM 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 3G Network | HSDPA 2100 | HSDPA 850 / 1900 / 2100 TD-SCDMA 1900 / 2100 |
HSDPA 900 / 2100 |
| 4G Network | - | LTE 1800 / 2600 TD-LTE 1900 / 2300 / 2500 / 2600 (Bands 3, 7, 38, 39, 40, 41) | - |
| Messaging | SMS, MMS, EMail, IM | SMS, MMS, EMail, IM | SMS, MMS, Push Mail, EMail, IM |
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| OS | Android OS, v4.2.2 (Jelly Bean) | Android OS, v4.4 (KitKat) | Android OS, v5.0 (Lollipop) |
| Processor | Dual-core 1.2 GHz, MTK 6572 | Quad-core 1.2 GHz Cortex-A53, Qualcomm MSM8916 Snapdragon 410 | Quad-core 1.3 GHz, Mediatek MT6582M |
| GPU | Mali-400 | Adreno 306 | Mali-400MP2 |
| RAM | 512 MB | 1 GB | 1 GB |
| Internal Memory | 4 GB ROM | 8 GB | 8 GB (4.9 GB for apps and mass storage) |
| External Memory | microSD, up to 32 GB | microSD, up to 32 GB | microSD, up to 32 GB |
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| Type | TFT capacitive touchscreen | IPS LCD Capacitive Touchscreen | IPS LCD Capacitive Touchscreen, Corning Gorilla Glass 3 |
| Colors | 16M colors | 16M colors | 16.7M colors |
| Size | 4.0 inches | 4.7 inches | 4.7 inches |
| Resolution | 480 x 800 pixels (233 ppi) | 720 x 1280 pixels (312 ppi) | 480 x 800 pixels (199 ppi) |
| Screen-to-Body Ratio | 56.50% | 67.83% | - |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | FM radio | FM Radio | FM Radio with Recording |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 3.2 MP, 2048x1536 pixels | 8 MP, 3264 x 2448 pixels | 8 MP, 3264x2448 pixels |
| Flash | LED flash | LED flash | LED flash |
| Features | Fixed Focus, Geo-tagging | Auto focus, Geo-tagging, Touch Focus, Face Detection, HDR, Sony Sensor, Panorama, Real-time HDR | Auto focus, Geo-tagging, Touch Focus, Face Detection, HDR |
| Video | Yes, 720p | Yes, 1080p | Yes, 720p |
| Front Camera | Yes, VGA [Similar] | 2 MP, 720p [Similar] | Yes, 2 MP, 720p [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, 21 Mbps; HSUPA, 5.76 Mbps | HSPA, LTE Cat4 150/50 Mbps | HSDPA, 21 Mbps; HSUPA, 5.76 Mbps |
| Bluetooth | Yes, v2.0 A2DP, EDR | v4.0, A2DP | Yes, v4.0 with A2DP |
| Wi-Fi | Wi-Fi 802.11 b/g/n, Wi-Fi hotspot | Wi-Fi 802.11 b/g/n, hotspot | Wi-Fi 802.11 b/g/n, Wi-Fi hotspot |
| USB | Yes, microUSB v2.0 | microUSB v2.0 | Yes, microUSB v2.0, USB On-the-go |
| GPS | Yes | Yes, with A-GPS, GLONASS, Beidou | Yes, with A-GPS support |
| Browser | HTML | HTML5 | HTML5 |
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| Internal | 4 GB ROM, 512 MB RAM | 8 GB, 1 GB RAM / 16 GB, 2 GB RAM | 8 GB (4.9 GB for apps and mass storage), 1 GB RAM |
| Expandable Storage | microSD, up to 32 GB | microSD, up to 32 GB | microSD, up to 32 GB |
| 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 | Li-Po Battery | Li-Po Battery | Li-Ion Battery |
| Capacity | 1500 mAh | 2200 mAh | 2000 mAh |
| Stand by | - | - | Up to 220 h |
| Talk Time | - | - | Up to 8 h |
