Phones that support two SIM cards are one of the most convenient inventions of our time, which was appreciated by many users: people who often move from region to region, have personal and work numbers, find the best deals from different operators, etc. Among the whole variety of smartphones with two SIM cards, it is worth highlighting the Samsung Duos line, all the models 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 call, an unused SIM card is not available to those trying to call the user.
- Only one SIM is involved in the work - to use the second one, you need to disable the work of the first one. The mode is typical for the most budget models.
Such principles distinguish between all Samsung Duos models, touch and push-button. Consider further their diversity.
2008: Beginning
In 2008, the first three models were released:
- Pioneer - push-button D780 DuoS, had two simultaneously working SIM cards. In addition, the phone boasted a two-megapixel rear camera, WAP browser, USB port, Bluetooch, 1200 mAh battery.
- D780 DuoS Gold Edition was an exact copy of the first model, but only with a noble golden case.
- D980 DuoS is the first touchscreen model in the Duos line. It had a screen with a diagonal of 2.6 inches, as well as a very good 5 Mpx camera at that time. The phone also came with a stylus.
2009 Quantitative Breakthrough
We continue to consider all models of "Samsung Duos" with a photo. In 2009, the collection of the Duos series has grown considerably:
- B5702 DuoS was slightly weaker than last year's "sensor" - its camera took pictures at a resolution of 3 MP, the screen was also slightly smaller - 2.4 inches.
- B5722 The DuoS had a 3.2 MP camera and a slightly larger 2.8 inch display.
- C3212 Duos is a budget button model with a rather weak battery - 1000 mAh. The camera didn't stand out either - 0.3 megapixels.
- C5212 Duos - again a push-button version, differing from the previous one with a slightly clearer camera - 1.3 MP.
- C6112 DuoS is a touchscreen gadget with a small screen (2.4 inches) and a 2 MP camera. Had the weakest battery - 960 mAh.
2010:budget models
All Samsung Duos models this year:
- B7722 Duos - 1200 mAh battery, 5-megapixel camera 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 MP camera. Only supported EDGE.
2011 Diversity
This year's collection was very diverse:
- C6712 Star II Duos is a touch device with a 3.2 megapixel camera, a screen diagonal of 3.2. Supported Wi-Fi, powered by a 1200 mAh battery.
- E2222 Duos is the first push-button with a qwerty keyboard. Possessed a weak camera (0.3 MP) and a battery (1000 mAh). Wi-Fi support was not his strength.
- E2652 Champ Duos is a budget "sensor" without Wi-Fi. Small screen, weak battery, 1.3 MP camera.
- Galaxy Y Duos was already based on Android, supported Wi-Fi, had a standard 3.5 mm audio output. The presence of a GPS-navigator was also an innovation. The phone also stood out with the most powerful battery - 1300 mAh. The screen diagonal is 3.14 inches, and the camera resolution is 3.15 megapixels.
- Galaxy Y Pro Duos - the phone differed from the previous model by the presence of a "quiver" keyboard, a more powerful 1350 mAh battery, but a smaller screen - 2.6 inches.
2012: four positions
All models of smartphones "Samsung Duos" for 2012year:
- Galaxy Ace Duos did not differ significantly from previous latest models - it was distinguished 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 MP and battery - 1200 mAh.
- Galaxy S Duos was powered by a Qualcomm MSM7227 processor. It had the largest screen in the line - 4 inches, the most powerful battery - 1500 mAh, a 5 MP camera.
- Star 3 Duos is a budget touch 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 models of "Samsun Duos" this year are calculated in two items:
- Galaxy S Duos 2 - characterizes the phone with a 4-inch screen that displays up to 16 million colors, a 5 megapixel camera, a 1500 mAh battery. Other features copy 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: powerful move
This year saw the release of only one model marked "Duos" - Galaxy S5. "Smart" worked on a Qualcomm Snapdragon 801 2500Mhz processor. Its screen was not a traditional TFT, but an innovative Super AMOLED, which allowed displaying up to 16 million colors at a diagonal of 5.1. The rear camera of this phone is not bad and today is 16 MP. The battery of the device is the most powerful in the line (2800 mAh). The phone, in addition to 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 model within the "Duos" was released - Galaxy J1, running on an ARM Cortex-A7 1200Mhz processor. It was noticeably inferior to last year - a 4.3-inch TFT display, 5 MP camera, 1850 mAh battery.
This is where the list of all Samsung Duos models ends. Convenient two-SIM phones from this Korean manufacturer are presented, as you can see, for every taste and budget.
