You can use the "cloned" sim and the original sim simultaneously meaning both of your SIMs will have network and both can send SMS at the same time.

你可以同时使用你的克隆卡和原卡，也就是说可以同时连上网络并同时发短信。

youdao

It will be able to read SIM CARDS and extract SIM-card-related information along with all user information on the SIM card, like phone call register and text messages, even if they have been deleted.

这意味着将能够读取SIM卡，以及SIM卡上的所有用户的信息，如电话通话记录和短信中提取的SIM卡相关的信息，即使已被删除也能读取到。

youdao

Important! You can not Top up this SIM. It will expire soon. Get your new lycamobile sim now.

这是我收到的短信，我该如何不换号码的同时拿到新的SIM卡？

youdao

Does it only work with the SIM it came with, or can you insert your existing SIM?

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These features are also supported with the GALAXY Core's Dual SIM technology, enabling users to access both SIM cards simultaneously.

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The rear, made in part from soft plastic, covers slots for the microSD and SIM (not micro-SIM) slots, but there's no battery access.

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