User:Vanessacuriel05/sandbox

= Samsung Galaxy Dual SIM = ''This page is about Samsung Galaxy's Duos. A Samsung Galaxy Duo is a Samsung phone and it has DUOS written over it that means the phone supports dual sim.''

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A Samsung Galaxy Duo got released in September 2012 around 8 years ago it first came out. Now today's date many people do not really use the Duo because it comes with a SIM card for to make the phone work with the phone calls and text messages.

Any mobile phone or smartphone requires a SIM (Subscriber Identification Module) card to connect to the mobile network. A smartphone or phone that can hold two different SIM cards at the same time is called a Dual SIM device. Having two SIM cards means that a Dual SIM smartphone can use either of the two SIMS to initiate or to receive phone calls.

= Contents =

Facts
= Overview = Within the Smart Phone ranges, Samsung often produces a Dual SIM variant, but these on 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 model number of Samsung Smart Phones will indicate the variant


 * GT-xnnn0 - mainstream model
 * GT-xnnn2 - Dual SIM "Duos" model
 * GT-xnnn5 - 3G/LTE model

Many people do not know how a SIM Dual work on a smart phone because these phones are 8 years old and they only come with Android Phones and not iPhone because they only included with SIM card that is hard to remove it from the iPhone.

For example, at first I didn't know that the Samsung phones only has those type of things not just the SIM Dual have to be taken off from the back of the phone or the side of the phone to remove it and put it back its place where the SIM Dual is located at.

= History = 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 are able to connect incoming calls, but only one at a time. Setting “Dual SIM Always on” allows a call on one SIM to interrupt a call on the other SIM.

The SIM card in the smartphone is really important because how are you going to use a phone without a SIM card without you can not make any phone calls or messages.

The SIM card is a type of smart card, the basis for which is the silicon integrated circuit (IC) chip. The idea of incorporating a silicon IC chip onto a plastic card originates from the late 1960s. Smart cards have since used MOS integrated circuit chips, along with MOS memory technologies such as flash memory and EEPROM (electrically erasable programmable read-only memory).

= Facts =


 * I also own a Samsung Galaxy phone and I learned today that you need a SIM Dual for the phone to work.
 * Also, the iPhone do not need a dual they just need the SIM not the Dual because it only has for the Android phones not the Apple phones.
 * If your memory runs out of storage you need to buy a new one because your old one ran out of storage because of taking too much pictures or having apps that you do not need.