How Do Dual Sim Phones Work

Nowadays we can find many phone makers produce dual SIM phones and sell them in shops. Then do you know what dual SIM phones are and how they work? If you are interested in the answer, just follow the article below.

What are dual SIM phones?

Dual SIM phones are handsets that hold two physical SIM cards, or one physical SIM card and one embedded SIM. People use dual SIM phones generally for the following three reasons:

1) To separate personal and business calls: some people may want to keep work and home separate. They use one phone number to communicate with colleagues for work issues, while anther phone number is used to connect with family members and friends.

2) For more coverage: In locations where lower prices apply to calls between clients of the same provider, where a single network may lack of comprehensive coverage. If you have a dual SIM phone, you can get more coverage to contact with others successfully.

3) For money saving when travelling: With a dual SIM phone, you can save money for international data fees when travelling. You can use your own SIM in one slot and use a prepaid SIM from your destination country in the second. This will allow you to avoid hefty international data roaming fees, but still keep your phone number accessible while overseas.

4) For backup: With a dual SIM phone, you can use one SIM card normally, while another one backup the data of the first SIM. It means larger storage and backup.

That is to say, for the above 4 main reasons, dual SIM phones become popular and many people own a dual SIM phone. You can see many devices that use two SIM cards have also been developed and released. Then do you want to know how do dual SIM phones work?

Generally, all smartphones support dual SIM cards have a SIM manager. This allows the smartphone to manage its dual-SIM capability. For example, you can decide which SIM card you want to use mainly, as well as manage their data usages separately. Depending on the manufacturer, there are options allowing one to associate a function to a SIM card by default, like which one handles outgoing calls or connects with 3G or 4G. Certainly, many messaging apps also support dual SIM: you can choose which SIM card you would like to use to send a message.

HONOR, as a leading phone manufacturer, has produced many models which support dual SIM cards. To let you know easier about them, we make a table to list which models have dual SIM cards for your choose:

From the above table, we can see that all of them support Nano-SIM, dual stand-by. Dual SIM and dual standby let your smartphone have two active SIM cards, and they both use only one radio transceiver. Normally, they are both active when you are not using them. If your mobile network is 3G or 4G, you can use the two phone number freely at the same time.