| Global Score | |
| 41.9 | 46.1 |
| Basic Information | |
| Karbonn | Blackberry |
| Android 4.0 | BlackBerry 7.1, 7 |
| -- | 2011-05-02 |
| -- | 4.53 x 2.60 x 0.41 inches |
| -- | 4.59 ounces |
| White | -- |
| $ 155.00 | $ 130.00 |
| Display / Screen | |
| 4.5 inches | 2.8 inches |
| 480 x 800 pixels | 640 x 480 pixels (VGA) |
| -- | TFT |
| 207 pixels per inch | 286 pixels per inch |
| Capacitive, Multi-touch | Capacitive, Multi-touch |
| 7 | 8 |
| Dual-Core 1200 MHz processor | QC 8655 (Single-Core 1200 MHz) processor |
| -- | 768 MB RAM |
| GPU | GPU |
| 7.65 | 7.65 |
| Storage | |
| 4 GB internal memory | 8 GB internal memory |
| microSD, microSDHC (up to 32 GB) external memory slot | microSD, microSDHC (up to 32 GB) external memory slot |
| 3.82 | 4.62 |
| Camera | |
| 5.00 MP + 1.30 MP | -- |
| -- | 1280 x 720 (HD) video resolution |
| 6.05 | 0 |
| Networks | |
| Wi-Fi | Wi-Fi |
| -- | Mobile Hotspot |
| HSDPA, UMTS, EDGE, GPRS and GSM | HSDPA, HSUPA, UMTS, EV-DO A, EDGE, GSM and CDMA |
| SIM, Dual SIM | SIM |
| 3.4 | 4.3 |
| Battery Life | |
| 1800mAh Battery | 1230mAh Li-Ion Battery |
| Removable Battery | Removable Battery |
| 200 hours standby time 5 hours talk time | 307 hours standby time 6.6 hours talk time |
| 3.68 | 2.88 |
| Other Features | |
| Bluetooth | Bluetooth 2.1, EDR |
| GPS | GPS |
| -- | NFC |
| -- | Accelerometer, Compass, Light Sensor and Proximity Sensor |
| Digital TV Broadcast | -- |
The BlackBerry Bold 9930 is a little bit better than the Karbonn A21, having a 46.1 score against 41.9. The BlackBerry Bold 9930 works with BlackBerry 7.1 operating system, while Karbonn A21 has Android 4.0 operating system. BlackBerry Bold 9930 counts with a better looking display than Karbonn A21, because although it has a little bit worse resolution of 480 x 640px and a lot smaller display, it also counts with more pixels per screen inch.
BlackBerry Bold 9930 has a processing unit that is just as good as Karbonn A21's CPU, although the BlackBerry Bold 9930 has lesser processing cores. The BlackBerry Bold 9930 counts with much more storage for games and applications than Karbonn A21, and although they both have a slot for an external memory card that holds a maximum of 32 GB, the BlackBerry Bold 9930 also has 8 GB internal memory.
The Karbonn A21 has a much better camera than BlackBerry Bold 9930. Karbonn A21 features a much longer battery performance than BlackBerry Bold 9930, because it has a 46% more battery capacity.
BlackBerry Bold 9930 is not only the best phones between the ones we are comparing, but it's also a bargain compared to the other ones, making it a no doubt choice.
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