Phone Comparison - Motorola DROID RAZR HD vs Karbonn A21
Motorola DROID RAZR HD.jpg)
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Karbonn A21.jpg)
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| Manufacturer | Motorola | Karbonn |
| Announced | September 2012 | 2012 |
| Status | Available - October 2012 | Available |
| Colors | Black, White | Pearl White |
| Form Factor | Candybar | Candybar |
| Dimension |
131.9 x 67.9 x 8.4 mm (5.19 x 2.67 x 0.33 in) |
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| Weight | 146 g (5.15 oz) | - |
| 2G Network | CDMA 800 / 1900 GSM 850 / 900 / 1800 / 1900 |
GSM 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 3G Network | CDMA2000 1xEV-DO HSDPA 850 / 900 / 1900 / 2100 |
HSDPA 2100 |
| 4G Network | LTE 700 MHz Class 13 | - |
| Messaging | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, Push Mail, EMail, IM |
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| OS | Android OS, v4.0.4 (Ice Cream Sandwich), upgradable to v4.1 | Android OS, v4.0 (Ice Cream Sandwich) |
| Processor | Dual-core 1.5 GHz, Qualcomm MSM8960 Snapdragon [Similar] | Dual-core 1.2 GHz [Similar] |
| GPU | Adreno 225 [Similar] | - |
| RAM | 1 GB [Browse Similar] | 512 MB [Browse Similar] |
| Internal Memory | 12 GB storage | 4 GB |
| External Memory | microSD, up to 32GB | microSD, up to 32 GB |
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| Type | Super AMOLED capacitive touchscreen | TFT capacitive touchscreen |
| Colors | 16M colors | 256K colors |
| Size | 4.7 inches [Similar] | 4.5 inches [Similar] |
| Resolution | 720 x 1280 pixels (312 ppi) [Similar] | 480 x 800 pixels (207 ppi) [Similar] |
| Screen-to-Body Ratio | 68.20% | - |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | No | No |
| Games | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 8 MP, 3264x2448 pixels [Similar] | 5 MP, 2592х1944 pixels [Similar] |
| Flash | LED flash | LED flash |
| Features | Auto focus, Touch-focus, Geo-tagging, Face Detection, Image Stabilization | Auto focus, Geo-tagging, Face Detection |
| Video | Yes, 1080p@30fps | Yes |
| Front Camera | Yes, 1.3 MP [Similar] | Yes, 1.3 MP [Similar] |
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| GPRS | Class 12 (4+1/3+2/2+3/1+4 slots), 32 - 48 kbps | Yes |
| Edge | Class 12 | Yes |
| 3G | Rev. A, up to 3.1 Mbps, LTE, HSPA+ | HSDPA, 7.2 Mbps |
| Bluetooth | Yes, v4.0 with LE+EDR | Yes, v2.1 with A2DP |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n, Wi-Fi hotspot | Wi-Fi 802.11 b/g/n |
| USB | Yes, microUSB v2.0 | Yes, microUSB v2.0 |
| GPS | Yes, with A-GPS support and GLONASS | Yes, with A-GPS support |
| Browser | HTML, Adobe Flash | HTML |
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| Internal | 12 GB storage, 1GB RAM | 4 GB, 512 MB RAM |
| Expandable Storage | microSD, up to 32GB | microSD, up to 32 GB |
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| Proximity Sensor | |
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| Accelerometer Sensor | |
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| Type | Li-Po Battery | Li-Ion Battery |
| Capacity | 2530 mAh | 1800 mAh |
| Stand by | Up to 286 h | Up to 200 h |
| Talk Time | Up to 24 h | Up to 5 h |
