This article's tone or style may not reflect the encyclopedic tone used on Wikipedia.(April 2019) |
Samsung Galaxy Duos (stylised as SAMSUNG GALAXY DUOS) are a series of Android dual SIM mobile devices designed, manufactured, and marketed by Samsung Electronics as Duos.
The Samsung Galaxy offers several different ranges of devices, including Smartphones, Phablets, and Tablets. Although widely known by marketing names, the underlying model ranges are best understood by looking at the model number. Since August 2011, all the smartphones of the Galaxy series are categorised in the following way (where x = I, N or S and nnn = model number): [1] [2]
Within the Smartphone ranges, Samsung often produces a Dual SIM variant, but these are not often widely available in many markets, where retail dominance by Mobile Network Operators (MNO) who operate a SIM-locked business model naturally deprecates Dual SIM devices.
The following phones are available as Duos models
This section may be unbalanced toward certain viewpoints.(January 2024) |
In their marketing materials, Samsung uses the term "Dual SIM Always On” [3] to describe the Duos phones, although both SIM cards are not always on. All phones with this feature are regular, Dual SIM Stand-by (DSS) phones, with 1 transceiver (radio). The second SIM is always disconnected when a call is in progress on SIM 1 and vice versa.
The manual for such phone's states: “Your device supports dual standby with two different networks. You cannot make or answer calls on both networks at the same time.”
Samsung Galaxy Duos have a menu option entitled “Dual SIM Always On” which when activated, activates call forwarding on the carrier's network. This can be done manually on any phone, regardless of manufacturer, e.g., enable call forwarding to SIM 2 when SIM 1 is connected. Call Forwarding must be provided by the carrier, often for a fee, subscriber will also be charged for call forwarding on a minute-by-minute basis, this depends on the subscription agreement.
“Dual SIM Always On” might sound like it is enabling the dual SIM capability of the phone. However, that control is elsewhere. Each SIM card in a Samsung dual SIM phone can be set to on or off independently in the top section of the SIM card Manager menu. When both are set to ON, then both can connect incoming calls, but only one at a time. If SIM 2 is in use, a caller to SIM 2 will be redirected by the carrier network as though the phone were off or out of range. E.g., to voicemail. This is the default behaviour, and it is what happens if “Dual SIM Always On” is set to "Offline".
Setting “Dual SIM Always On” allows a call on one SIM to interrupt a call on the other SIM.
Some mobile phones support use of two SIM cards, described as dual SIM operation. When a second SIM card is installed, the phone may allow users to switch between two separate mobile network services manually, have hardware support for keeping both connections in a "standby" state for automatic switching, or have two transceivers to maintain both network connections at once.
Samsung Galaxy is a series of computing and mobile computing devices that are designed, manufactured and marketed by Samsung Electronics. The product line includes the Samsung Samsung Galaxy S series of high-end phones, Samsung Galaxy Z series of high-end foldables, Samsung Galaxy A series of mid-range phones, the Samsung Galaxy Book, the Samsung Samsung Galaxy Tab series, the Samsung Galaxy Watch, the Samsung Samsung Galaxy Buds series and the Samsung Samsung Galaxy Fit.
The Samsung Galaxy 3, also known as the Samsung Galaxy Apollo, Samsung Galaxy Mini in Italy, or Samsung Galaxy 580 in Hong Kong, is a smartphone manufactured by Samsung that runs the open source Android operating system. Announced and released by Samsung in July 2010, the Galaxy 3 succeeds the Samsung Galaxy Spica.
The Samsung Galaxy S II is a touchscreen-enabled, slate-format Android smartphone designed, developed, and marketed by Samsung Electronics, as the second smartphone of the Samsung Galaxy S series. It has additional software features, expanded hardware, and a redesigned physique compared to its predecessor, the Samsung Galaxy S. The S II was launched with Android 2.3.4 "Gingerbread", with updates to Android 4.1.2 "Jelly Bean".
Samsung Galaxy Y (GT-S5360) is an Android-based smartphone by Samsung, announced in August 2011. Its main features are 3G connection with speeds up to 7.2 Mbit/s and Wi-Fi.
Samsung Galaxy Ace 2 (GT-I8160) is a smartphone manufactured by Samsung that runs the Android operating system. Announced and released by Samsung in February 2012, the Galaxy Ace 2 is the successor to the Galaxy Ace Plus.
The Samsung Galaxy Note II is an Android phablet smartphone. Unveiled on August 29, 2012 and released in October 2012, the Galaxy Note II is a successor to the original Galaxy Note, incorporating improved stylus functionality, a larger 5.5-inch (140 mm) screen, and an updated hardware and casing design based on that of the Galaxy S III.
The Samsung Galaxy S III Mini is a touchscreen-based, slate-sized smartphone designed and manufactured by Samsung. It was announced in October 2012 and released in November 2012. The Galaxy S III Mini technological specifications include a 4-inch Super AMOLED display, a dual-core processor running at 1 GHz with 1 GB of RAM, a 5-megapixel rear camera, and a front-facing VGA camera for video calls or selfies.
Samsung Galaxy S Duos also known as GT-S7562 is a dual SIM smartphone, designed and marketed by Samsung Electronics. In contrast with other dual sim Samsung models, this phone is a part of the high-end "S" series, this is why it is marketed as a part of the "''Galaxy S'' family.
The Samsung Galaxy Ace 3 (GT-S7270/GT-S7272/GT-S7275R) is a smartphone manufactured by Samsung that runs the Android operating system. Announced and released by Samsung in June 2013, the Galaxy Ace 3 is the successor to the Galaxy Ace 2.
Samsung Galaxy Core GT-I8260 single sim card slot model and Samsung Galaxy Core GT-I8262 dual sim card variant are smartphone manufactured by Samsung Electronics that runs on the open source Android 4.1.2 Jelly Bean operating system. Announced by Samsung in early May 2013, the Dual-SIM model has been released in mid-to-late May 2013, and the single-SIM version for July 2013.
The Samsung Galaxy S4 Mini is an Android smartphone developed by the Korean manufacturer Samsung Electronics. Announced on May 31, 2013 and released in July 2013, the S4 Mini is a mid-range model of its flagship Galaxy S4 smartphone and a successor to the Galaxy S III Mini. It has a similar hardware design and software features to its high-end counterpart.
The Samsung Galaxy Young is a low-end 32-bit Android smartphone by Samsung Electronics which was released in March 2013. Like all other Samsung Galaxy smartphones, the Galaxy Young runs on the Android mobile operating system. The phone features a 3.27 inch TFT LCD touchscreen. The phone has Dual SIM capabilities depending on the model. Many users have found the device's capabilities basic, seeing it as a low-end smartphone for children or teenagers who are having their first smartphone as the name implies.
The Samsung Galaxy Star is a low-end smartphone manufactured by Samsung Electronics. It is running on Android 4.1.2(Jelly Bean). It has unofficial Android 4.4, 5.1, 6.0.1 and 7.1 roms. It was announced in April 2013, it was subsequently released in May 2013. It is the cheapest smartphone in the Samsung Galaxy series. Like all other Samsung Galaxy smartphones, the Galaxy Star runs on the Android mobile operating system. The phone is available in 2 versions: a single SIM version (GT-S5280) and a dual SIM version (GT-S5282). The phone competes with other low-cost smartphones such as the smartphones from the Nokia Asha series as well as low-cost smartphones manufactured by Indian manufacturers such as Micromax, Karbonn, Spice Digital, Lava International and Celkon. It is available in certain Asian countries such as India, Pakistan, Sri Lanka, Nepal, Bangladesh, Myanmar, Philippines, Indonesia etc. where low-cost smartphones are very popular as well as in Morocco, Algeria, South Africa, Portugal, France, Germany, Russia and Ukraine. Brazilian version is also released, dubbed GT-S5283B.
Samsung Galaxy Fame is a low-end smartphone by Samsung Electronics which was released in February 2013. Like all other Samsung Galaxy smartphones, the Galaxy Fame runs on the Android mobile operating system. The phone features a 3.5 inch HVGA LCD touchscreen. Depending on the model, the phone can have variants which have dual-MicroSIM or NFC capabilities. Many users have found the device's capabilities to be basic, seeing it as a low-end smartphone for light users that want some of the functionality of higher end Galaxy devices.
The Samsung Galaxy S Duos 2 is a dual SIM Android smartphone, produced, released and marketed by Samsung Electronics, which serves as an immediate successor to the original Galaxy S Duos. It is the dual SIM version of the Samsung Galaxy Trend Plus.
Samsung Galaxy S Duos 3 is a dual SIM Android smartphone, produced and marketed by Samsung Electronics, which serves as an immediate successor to the original Galaxy S Duos 2 of 2013. It was announced in August 2014 and was made available on the same month.
The Samsung Galaxy Ace 4 is a smartphone manufactured by Samsung that runs the Android operating system. Announced in June and released by Samsung in August 2014, the Galaxy Ace 4 is the successor to the Galaxy Ace 3. An LTE model was also announced in 2014.
The Samsung Galaxy J1 Ace is a lower mid-range smartphone manufactured by Samsung Electronics as part of the Galaxy J series.
Samsung Galaxy J5 2017 is an Android-based smartphone produced, released and marketed by Samsung Electronics. It was unveiled and released in July 2017 along with the Samsung Galaxy J3 (2017). It has an advanced 64-bit class system on a chip (SoC) backed by 2 GB or 3 GB Of LPDDR3 RAM. It packs a Non-removable 3000 mAh battery. The Galaxy J5 (2017) is the successor to the Samsung Galaxy J5 (2016).