When a device is dual SIM, it means that you can use two different SIM cards independently. You can therefore have two completely different mobile phone numbers in one handset!
This can often be useful for those who might have a separate, regularly used number for work but don't want to carry a second phone. It can also be of benefit to those who regularly travel or call abroad and use a different SIM card or tariff for that purpose.
Some dual SIM phones have differently sized slots. Also it is often the case that only one slot can be used for mobile data, with the other only for voice/text. We recommend you check the specifications before purchasing to be sure a dual SIM phone will suit your needs.
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