Double-clicking a card and waiting in the background will get all the information of both cards at the same time?

Under normal circumstances, two mobile phone cards installed on a dual-card dual-standby mobile phone are in standby state at the same time, so both mobile phone cards can receive short messages.

In the past, when there was no dual-card dual-standby mobile phone, if you want to use two mobile phone cards, you need to install them in two different mobile phones. The emergence of dual-card dual-standby mobile phone has solved such a problem.

Yes, dual-card dual-standby mobile phone is equipped with mobile card and telecom card. Both cards can make and receive calls and send and receive messages normally.