| Global Score | |
| 42.2 | 87.3 |
| Basic Information | |
| Celkon | Samsung |
| Android 4.2.2 | Android 5.0 |
| -- | 2015-04-11 |
| 4.91 x 2.60 x 0.43 inches | 5.65 x 2.78 x 0.27 inches |
| 4.07 ounces | 4.87 ounces |
| Black, Blue and Red | Black, Blue, Gold and White |
| -- | Aluminium and Glass |
| -- | Scratch-Resistant Glass |
| $ 249.00 | $ 245.00 |
| Display / Screen | |
| 4 inches | 5.1 inches |
| 320 x 480 pixels | 1440 x 2560 pixels (Quad HD / 2K) |
| -- | Super AMOLED |
| 144 pixels per inch | 576 pixels per inch |
| Capacitive, Multi-touch | Capacitive, Multi-touch |
| 6.4 | 9.9 |
| Performance | |
| -- | Exynos 7 Octa 7420 chipset |
| Dual-Core 1200 MHz processor | 64-bit ARM Cortex-A57 (Quad-Core 2100 MHz + Quad-Core 1500 MHz) processor |
| 256 MB RAM | 3 GB (1600 MHz) RAM |
| Yes GPU | Mali-T760 MP8 (650 MHz) GPU |
| 7.74 | 10.08 |
| Storage | |
| 524,29 MB internal memory | 128 GB internal memory |
| microSD, microSDHC (up to 32 GB) external memory slot | No SD card slot |
| 2.42 | 10.1 |
| Camera | |
| 3.20 MP + 1.30 MP | 16.00 MP + 5.00 MP |
| -- | f/1.90 aperture |
| -- | 28.00mm focal length |
| -- | 0.38 inches (1/2.6") sensor |
| -- | 3840 x 2160 (30 fps) (4K) video resolution |
| 5.61 | 10.01 |
| Networks | |
| Wi-Fi | Wi-Fi |
| -- | Mobile Hotspot |
| EDGE, GPRS and GSM | LTE-A (4G), LTE (4G), HSPA, HSUPA, UMTS, EDGE, GPRS and GSM |
| SIM, Dual SIM | Nano SIM |
| 2.8 | 6.7 |
| Battery Life | |
| 1500mAh Li-Ion Battery | 2550mAh Battery |
| Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 8 hours talk time | -- |
| 3.28 | 4.56 |
| Other Features | |
| Bluetooth 4.0 | Bluetooth 4.1 |
| GPS | GPS |
| -- | NFC |
| -- | Infra-red port |
| -- | Fingerprint ID Scanner |
| Accelerometer, Compass, Light Sensor and Proximity Sensor | Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | -- |
The Galaxy S6 is way better than the Celkon A21, with a score of 87.3 against 42.2. Galaxy S6's body is somewhat heavier but thinner than the Celkon A21. Both phones in our current comparison use Android OS (Operating System), but Galaxy S6 has newer 5.0 version and Celkon A21 has Android 4.2.2 version, so it provides the user a couple additional features and a performance increase.
Samsung Galaxy S6 has a much sharper screen than Celkon A21, because it has way more pixels per inch of display, a way better 2560 x 1440 resolution and a larger display. The Samsung Galaxy S6 features much more memory capacity for games and applications than Celkon A21, because although it has no external memory card slot, it also counts with more internal storage capacity.
The Samsung Galaxy S6 features a much better hardware performance than Celkon A21, because it has 6 more cores, a graphics processing unit, 2,75 GB more RAM and a 64-bit CPU. Samsung Galaxy S6 counts with a really longer battery duration than Celkon A21, because it has a 70 percent larger battery size.
Galaxy S6 captures a lot better pictures and videos than Celkon A21, because it has a back camera with a much better resolution.
Despite of being the best phone of the ones we are comparing, Samsung Galaxy S6 is also the cheapest.
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