| Global Score | |
| 41.9 | 76.4 |
| Basic Information | |
| Karbonn | Motorola |
| Android 4.0 | Android 4.4.4 |
| -- | 2014-10-28 |
| -- | 5.65 x 2.89 x 0.42 inches |
| -- | 5.96 ounces |
| White | Gray and Red |
| -- | Scratch-Resistant Glass |
| $ 155.00 | $ 158.00 |
| Display / Screen | |
| 4.5 inches | 5.2 inches |
| 480 x 800 pixels | 1440 x 2560 pixels (Quad HD / 2K) |
| -- | AMOLED |
| 207 pixels per inch | 565 pixels per inch |
| Capacitive, Multi-touch | Capacitive, Multi-touch |
| 7 | 9.7 |
| Performance | |
| -- | Qualcomm Snapdragon 805 APQ8084 chipset |
| Dual-Core 1200 MHz processor | Krait 450 (Quad-Core 2700 MHz) processor |
| -- | 3 GB (800 MHz) RAM |
| GPU | Adreno 420 (500 MHz) GPU |
| 7.65 | 9.54 |
| Storage | |
| 4 GB internal memory | 32 GB internal memory |
| microSD, microSDHC (up to 32 GB) external memory slot | No SD card slot |
| 3.82 | 5.8 |
| Camera | |
| 5.00 MP + 1.30 MP | 20.70 MP + 2.00 MP |
| -- | f/2.00 aperture |
| -- | 3840 x 2160 (24 fps) (4K) video resolution |
| -- | 1920 x 1080 (30 fps) (Full HD) slow motion video |
| 6.05 | 9.9 |
| Networks | |
| Wi-Fi | Wi-Fi |
| -- | Mobile Hotspot |
| HSDPA, UMTS, EDGE, GPRS and GSM | LTE (4G), HSPA, UMTS, EV-DO A, EDGE, GPRS, GSM and CDMA |
| SIM, Dual SIM | Nano SIM |
| 3.4 | 6.6 |
| Battery Life | |
| 1800mAh Battery | 3900mAh Battery |
| Removable Battery | Removable Battery |
| 200 hours standby time 5 hours talk time | -- |
| 3.68 | 5.84 |
| Other Features | |
| Bluetooth | Bluetooth 4.0 |
| GPS | GPS |
| -- | NFC |
| -- | Infra-red port |
| -- | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| Digital TV Broadcast | -- |
The Motorola DROID Turbo is a lot better than the Karbonn A21, having a general score of 76.4 against 41.9. Both of these devices come with Android OS (operating system), but Motorola DROID Turbo has a more recent 4.4.4 version and Karbonn A21 has Android 4.0 version, so it provides some nice extra features and enhanced performance.
Motorola DROID Turbo counts with a lot better display than Karbonn A21, because it has a much higher resolution of 2560 x 1440px, a lot better screen density and a bigger display. The Motorola DROID Turbo features a much better performing processing unit than Karbonn A21, because it has a larger number of cores and a graphics co-processor.
Motorola DROID Turbo shoots much better pictures and videos than Karbonn A21, because it has a way more megapixels back-facing camera. The Motorola DROID Turbo has a superior storage to install applications and games than Karbonn A21, because although it has no slot for SD memory cards, it also counts with 32 GB internal memory.
Motorola DROID Turbo counts with a way better battery lifetime than Karbonn A21, because it has 3900mAh of battery capacity.
Motorola DROID Turbo is a bit more expensive than Karbonn A21, but it's still a great deal, as you can get a better phone for that extra money.
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