Samsung Galaxy Duos
| Company type | Product line |
|---|---|
| Industry | Consumer electronics |
| Founded | August 2011 |
| Founder | Samsung Electronics |
| Products | Android dual SIM mobile phones |
| Parent | Samsung Electronics |
Template:Tone Samsung Galaxy Duos (stylized as SAMSUNG GALAXY DUOS) represent a collection of Android dual SIM mobile phones developed, produced, and sold by Samsung Electronics under the Duos branding.
Range
The Samsung Galaxy lineup encompasses a variety of device categories, including smartphones, Phablets, and tablets. While these devices are frequently identified by their marketing designations, the most precise way to understand the product families is by examining their model numbers. Since August 2011, Samsung has classified all Galaxy smartphones according to this scheme (where x = I, N, or S and nnn = model number):[1][2]
- GT-x5nnn – Entry-level ("Realistic") devices
- GT-x7nnn – Mid-tier ("Slim") devices
- GT-x8nnn – Upper mid-tier ("Loyal") devices
- GT-x9nnn – Premium ("Clever") devices
- GT-xnnn0 – Standard model
- GT-xnnn2 – Dual SIM "Duos" version
- GT-xnnn5 – 3G/LTE variant
Within these smartphone categories, Samsung frequently offers Dual SIM editions; however, availability is limited in many regions due to the predominance of Mobile Network Operators (MNOs) that typically sell SIM-locked phones, which discourages Dual SIM adoption.
Duos Models
The following models are offered as Duos versions:
- GT-S6802 – GALAXY Ace DUOS
- GT-S7562 – Galaxy S Duos (Dual SIM variant of Galaxy Ace IIx / Galaxy Trend)
- GT-I9082 – Galaxy Grand Duos
- GT-I9192 – Galaxy S4 Mini Duos
- GT-I8552 – Galaxy Win/Grand Quattro
- GT-I8262 – Galaxy Core Duos
- SM-G530H – Galaxy Grand Prime
- SM-G355H – Galaxy Core 2
- SM-J110H – Galaxy J1 Ace Duos
- SM-J500H/DS – Samsung Duos
- SM-J530F/DS – Samsung Galaxy J5 (2017)
- SM-A730F/DS – Galaxy A8+ Duos
Samsung "Dual SIM Always on" feature
Template:Bias In promotional content, Samsung refers to the "Dual SIM Always On” feature[3] for its Duos handsets; however, both SIM cards are not simultaneously active at all times. These devices operate as standard Dual SIM Stand-by (DSS) phones, equipped with a single radio transceiver. Consequently, when a call is ongoing on one SIM card, the other is temporarily disconnected.
User manuals clarify: “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 include a “Dual SIM Always On” option within the settings menu that activates call forwarding through the carrier’s network. This functionality can be manually configured on any mobile phone regardless of brand—for example, setting call forwarding from SIM 1 to SIM 2 when SIM 1 is engaged. This service relies on carrier support and often incurs additional charges based on call duration as per the subscriber’s plan.
Although “Dual SIM Always On” might imply continuous simultaneous operation of both SIM cards, the actual control over each SIM’s status is managed separately via the top section of the SIM card Manager menu. When both SIMs are enabled (set to ON), they can receive incoming calls individually but not concurrently. If a call arrives on SIM 2 while it is busy or in use, the network will treat it as if the phone is off or unreachable—redirecting it to voicemail by default. This behavior occurs when “Dual SIM Always On” is disabled (“Offline”).
Enabling “Dual SIM Always On” permits an incoming call on one SIM to interrupt an ongoing call on the other SIM.
References
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- ↑ Lutz, Zachary (24 August 2011). "Samsung debuts new Galaxy lineup, refines naming strategy along the way". Engadget. Retrieved 16 May 2012.
- ↑ (in German) Samsungs Smartphone-Klassifizierung Archived 2014-10-06 at the Wayback Machine
- ↑ "Juggle work and play in style with Samsung GALAXY S DUOS". Archived from the original on 2013-09-21. Retrieved 2013-10-08.