Phones that support the work of two SIM cards is one of the most convenient inventions of our time, which was appreciated by many users: often moving from region to region, having a personal and work number, finding the most profitable offers from different operators, etc. Among all A variety of smartphones with two SIM cards is worth highlighting the Samsung Duos line, all of which we will try to reflect in this article.
Samsung Duos: Features
Phones that support two SIM cards are divided into three large groups:
- With two active SIM cards - in talk mode with one SIM activated, the second one can also receive an incoming call, and the subscriber, in turn, can switch between them.
- SIM cards are equally active only in standby mode - during a conversation an idle SIM card is not available for those trying to reach the user.
- Only one SIM is involved in the work - to use the second, you must disable the work of the first. The mode is typical for the most budget models.
Such principles distinguish all Samsung Duos models, touch and button. Let us further consider their diversity.
2008: the beginning
In 2008, the first three models were released:
- The pioneer is the push-button D780 DuoS, had two simultaneously working SIM cards. In addition, the phone boasted a two megapixel rear camera, a WAP browser, a USB port, Bluetooch, and a 1200 mAh battery.
- The D780 DuoS Gold Edition was an exact copy of the first model, but only with a noble golden solution of the case.
- The D980 DuoS is the first sensor model in the Duos line. It had a screen with a diagonal of 2.6 inches, as well as a very good camera at that time at 5 Mpx. A stylus was also included with the phone.
2009: a quantitative breakthrough
We continue to consider all Samsung Duos models with photos. In 2009, the Duos series collection was significantly expanded:
- The B5702 DuoS was slightly weaker than last year’s “sensor” - its camera took pictures with a resolution of 3 megapixels, the screen was also slightly smaller - 2.4 inches.
- B5722 DuoS had a camera with a resolution of 3.2 megapixels and a slightly larger display with a diagonal of 2.8.
- C3212 Duos is a budget button model with a rather weak battery - 1000 mAh. The camera also did not stand out - 0.3 megapixels.
- C5212 Duos is again a button option, which differs from the previous one with a slightly sharper camera - 1.3 megapixels.
- C6112 DuoS is a touchscreen gadget with a small screen (2.4 inches), a 2 megapixel camera. Had the weakest battery - 960 mAh.
2010: budget models
All Samsung Duos models this year:
- B7722 Duos - a 1200 mAh battery, a 5 megapixel camera, has returned to this phone. The diagonal of its display was 3.2 inches. The first in the line to support Wi-Fi.
- E2152 Duos Lite is a budget push-button phone with a 1000 mAh battery and a 0.3 megapixel camera. Supported only EDGE.
2011: variety
This year's collection was very diverse:
- C6712 Star II Duos - a touch device with a 3.2 megapixel camera, 3.2 screen diagonal. Supported Wi-Fi, powered by a 1200 mAh battery.
- E2222 Duos - the first push-button with qwerty-keyboard. It had a weak camera (0.3 megapixels) and a battery (1000 mAh). Wifi support was not his dignity.
- E2652 Champ Duos - a budget “sensor” without Wi-Fi. Small screen, weak battery, 1.3 megapixel camera.
- Galaxy Y Duos already worked on Android, supported Wi-Fi, had a standard 3.5 mm audio output. The innovation was the presence of a GPS navigator. The phone stood out with the most powerful battery - 1300 mAh. The screen size is 3.14 inches, and the camera resolution is 3.15 megapixels.
- Galaxy Y Pro Duos - from the previous model, the phone was distinguished by the presence of a “quarter” -keypad, a more powerful 1350 mAh battery, but a smaller screen - 2.6 inches.
2012: four positions
All Samsung Duos smartphones for 2012:
- Galaxy Ace Duos did not differ significantly from previous previous models - it was allocated by a 5 megapixel camera, a screen with a diagonal of 3.5 inches.
- Galaxy Pocket Duos - the differences of this phone are in the diagonal of the display - 2.8 inches, camera power - 2 megapixels and battery - 1200 mAh.
- The Galaxy S Duos functioned with a Qualcomm MSM7227 processor. It had the largest screen in the line - 4 inches, the most powerful battery - 1500 mAh, a 5 megapixel camera.
- Star 3 Duos is a budget touchscreen model. It was distinguished by a screen with a diagonal of 3 inches, a battery of only 1000 mAh, a camera of 3.15 megapixels.
2013: continuation of the story
All Samsun Duos models of this year are counted in two names:
- Galaxy S Duos 2 - the phone is characterized by a 4-inch screen displaying up to 16 million colors, a 5 megapixel camera, and a battery capacity of 1,500 mAh. The remaining features are copied from previous models.
- Galaxy Young Duos - its 3.27-inch screen reflected about 256 thousand colors, the camera was characterized by 3 megapixels. The battery was weaker - 1300 mAh.
2014: a powerful move
This year saw the release of only one model marked "Duos" - Galaxy S5. Smart was powered by a Qualcomm Snapdragon 801 2500Mhz processor. Its screen was not the traditional TFT, but the innovative Super AMOLED, which allowed displaying up to 16 million colors with a diagonal of 5.1. The rear camera of this phone is not bad and for today - 16 megapixels. The battery in the device is the most powerful in the line (2800 mAh). The phone, among other means of communication, began to support NFC, LTE, for some reason, an infrared port appeared in it.
2015: the last hero
This year, the latest Duos model was released today - the Galaxy J1, powered by an ARM Cortex-A7 1200Mhz processor. It is noticeably inferior to last year - a 4.3-inch TFT display, a 5 megapixel camera, an 1850 mAh battery.
This is the end of the list of all Samsung Duos models. Convenient dual-SIM phones from this Korean manufacturer are presented, as you have seen, for every taste and budget.