Phone Comparison - Karbonn A12+ vs Microsoft Lumia 640 XL LTE Dual SIM vs InFocus M530
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| Manufacturer | Karbonn | Microsoft | InFocus |
| Announced | October 2013 | March 2015 | June 2015 |
| Status | Available - October 2013 | Available - April 2015 | Available - June 2015 |
| Price | - | Rs. 14,999 ($220.57) [Similarly Priced] | Rs. 10,999 ($161.75) [Similarly Priced] |
| Colors | White, Black | Matte cyan, Orange, Black, Matte white, Glossy white | Black, White |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension | - |
157.9 x 81.5 x 9 mm (6.22 x 3.21 x 0.35 in) |
157 x 77 x 9.1 mm (6.18 x 3.03 x 0.36 in) |
| Weight | - | 171 g (6.03 oz) | 176 g (6.21 oz) |
| 2G Network | GSM 900 / 1800 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 |
| 3G Network | HSDPA 2100 | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 850 / 2100 |
| 4G Network | - | LTE | LTE 1800 / 2600 |
| Messaging | SMS, MMS, EMail, IM | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, EMail, IM |
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| OS | Android OS, v4.2.2 (Jelly Bean) | Microsoft Windows Phone 8.1 with Lumia Denim | Android OS, v4.4.4 (KitKat) |
| Processor | Dual-core 1.3 GHz, MTK 6572 | Quad-core 1.2 GHz Cortex-A7, Qualcomm Snapdragon 400 | Quad-core 2.0 GHz Cortex-A17 & quad-core 1.7 GHz Cortex-A7, MediaTek MT6595 |
| GPU | Mali-400MP | Adreno 305 | PowerVR H6200MP4 |
| RAM | 512 MB | 1 GB | 2 GB |
| Internal Memory | 4 GB (1.27 GB for apps, 1.24 GB user available) | 8 GB | 16 GB |
| External Memory | microSD, up to 32 GB | microSD, up to 128 GB | microSD, up to 32 GB |
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| Type | IPS LCD Capacitive Touchscreen, Wide Viewing Angle | IPS LCD Capacitive Touchscreen, Corning Gorilla Glass 3, ClearBlack Display | IPS LCD Capacitive Touchscreen, Corning Gorilla Glass 3 |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 4.0 inches | 5.7 inches | 5.5 inches |
| Resolution | 480 x 800 pixels (233 ppi) | 720 x 1280 pixels (259 ppi) | 720 x 1280 pixels (267 ppi) |
| Screen-to-Body Ratio | - | 68.88% | 68.99% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | FM radio | FM radio | No |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 5 MP, 2592х1944 pixels | 13 MP, 4128 x 3096 pixels | 13 MP, 4128 x 3096 pixels |
| Flash | LED flash | LED Flash | Dual-LED (Dual Tone) |
| Features | Auto-focus, Geo-tagging, Face Detection, Panorama | Carl Zeiss Optics, 1/3'' sensor size | Auto focus, OIS, Sony IMX214 Exmor RS Sensor, Geo-tagging, Touch Focus, Face Detection, Image Stabilization, HDR, Panorama |
| Video | Yes, 720p | 1080p@30fps | 1080p@30fps |
| Front Camera | Yes, 2 MP [Similar] | 5 MP, 1080p [Similar] | 13 MP, Auto focus, LED Flash, Sony Exmor [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSDPA, 21 Mbps; HSUPA, 5.76 Mbps | HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps | HSDPA, HSUPA |
| Bluetooth | Yes, v2.0 A2DP, EDR | v4.0, A2DP | v4.0, A2DP |
| Wi-Fi | Wi-Fi 802.11 b/g/n, Wi-Fi hotspot | Wi-Fi 802.11 b/g/n, DLNA, hotspot | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct |
| USB | Yes, microUSB v2.0 | microUSB v2.0 | microUSB v2.0 (MHL), USB On-the-go |
| GPS | Yes, with A-GPS support | Yes, with A-GPS, GLONASS, Beidou | Yes, with A-GPS, GLONASS |
| Browser | HTML | HTML5 | HTML5 |
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| Internal | 4 GB (1.27 GB for apps, 1.24 GB user available), 512 MB RAM | 8 GB, 1 GB RAM | 16 GB, 2 GB RAM |
| Expandable Storage | microSD, up to 32 GB | microSD, up to 128 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-Ion Battery | Li-Ion Battery | Removable Battery |
| Capacity | 1400 mAh | 3000 mAh | 3100 mAh |
| Stand by | - | Up to 936 h (2G) Up to 936 h (3G) |
Up to 590 h (3G) |
| Talk Time | - | Up to 31 h 20 min (2G) Up to 23 h 40 min (3G) |
Up to 12 h (3G) |
