The Samsung Galaxy S Duos 2 is the successor to the S Duos and offers a better deal, but the design and the build is similar to the predecessor, predominantly plastic and a WVGA LCD display.
It is not big enough to be termed as a phablet, but has a decent size and good viewing angles and a decent display. The camera also manages to take some good pictures, especially considering that this is a budget device and brings in some additional features, such as Sound and Shot, Best photo and Continuous Shot and so on. It is more than average in ideal conditions, but the low light performance is not so good, but the LED flash compensates for this, offering good video performance as well for the price. It comes with a RAM of 768, with about 2.16 GB available for the user and an expansion of up to 64 GB using a microSD card.
On the other hand, the Samsung Galaxy Core is a mid range device offered in both the single and the dual SIM version and is sold at an affordable price. It is a decent smartphone made in the same blueprint of all the other Android devices by Samsung. The device offers good color accuracy and the display is good, with decent viewing angles.
Both the phones are Android based with the Core using Android 4.1 version and the S Duos 2 operating on Android 2.3. The S Duos has dimensions of 4.93 x 2.6 x 0.33 inches, whereas the Core has dimensions of 5.09 x 2.66 x 0.35. The S Duos 2 is also slightly heavier at 124g compared to the 116 g of the S Duos 2.
Both the devices have almost similar screen display with the Core at 4.3 inches and the S2 at 4.27 inches with similar resolution of 480 x 800 p, with the Core having a pixel density of 217 and the S2 having 218 ppi. The Core uses the TFT technology for its display and the S2 uses the Super AMOLED Plus. Both the devices run on the 1.2 GHz Dual Core platforms.
As for the camera, the Core has a lower resolution of 5-MP, whereas the S2 has a higher resolution of 8-MP for its rear camera, though both are LED cameras with all the usual features of Autofocus, smile detection, Geo tagging, panorama and other effects.
Comparing the price, the Samsung Galaxy S2 is slightly more expensive at around $235, whereas the Core is available for around $211. The Core was released later in 2013, whereas the S2 is a slightly older device released in 2011.
Samsung Galaxy S2 – Pros
The S2 has a higher camera resolution of 8-MP compared to the 5-MP of the core, offering sharper and a better quality of images. The secondary or front camera of the S2 is also better at 2 MP compared to the 0.3 MP camera of the Core, making it a better device for video blogging and for video calling. The device is also lighter by 8 grams.
Samsung Galaxy Core – Pros
The Core has the advantage of having a 10% more powerful battery of 1800 mAh, compared to the 1650 mAh of the S2. The screen is bigger at 4.3 inches compared to the 4.27 of the S2. The Core also operates on a better OS of Android 4.1 version compared to the 2.3 Android version of the S2.
If you consider portability as well as the ease of use as your priority in a device, the S2 is a better choice between the two devices, as it is lighter and thinner.