Active dual SIM phones

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Mobile phones with a dual SIM have room for 2 SIM cards. That's useful when you want to separate work and your private life, for example. You don't have to constantly switch SIM cards or use 2 phones. There's a difference between active dual SIM and standby dual SIM. A phone with active dual SIM has 2 antennas. As a result, the SIM cards work at the same time and you can always be reached on both numbers.