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Well it really depends on the type of phone. Some types of phones have two CPUs so its kind of like having two phones in one, this allows you to answer two calls from two different sims at the same time. Essentially you receive signals from both the numbers in your phone.

The second type of dual sim phones don't have two CPUs so you can expect mixed results. These types of phones have some sort of call secretary software that will direct you incoming phone call to voice mail if you are buy on another call on the first sim. However if the phone does not have this type of software the caller will have to wait as your line will give him the busy signal. The latter types of cell phones however are considerably cheap.

Many people often ask if they can actually take two calls on one phone. The answer lies in the number of CPUs your phone has. If your phone has multiple CPUs then yes you can take two calls on one phone. However if it does not then you can not.

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13y ago
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10y ago

A dual sim phone has the ability to have two sims instead of the normal one. This enables you to switch networks on the same phone, and is useful if, for example, you travel internationally a lot.

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13y ago

Actually in the dual Sim mobiles the transmitter and receiver (transceiver) are separate for both the Sims.

Just like two phones working in a box ....

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10y ago

Benefits of dual sim mobile phones are that you can take advantage of different pricing plans, and save on mobile data usage. Sim mobile phones are also very affordable.

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7y ago

Absolutely ! I have a dual-SIM phone, but only use ONE SIM card in it. The phone simply alerts me that SIM 2 is missing when it's first switched on.

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Q: Can one SIM work in a dual SIM phone?
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