Can't dual card and dual standby use a carrier card at the same time?

You can use the card of the same operator, and there is a dual card setting in the traffic settings. Click on it, there is a traffic card setting.

Next, I will refer to the dual-card dual-standby one-way mobile phone: one-way mobile phone, referred to as dual-card dual-standby two-way mobile phone: dual-way mobile phone. Their differences are as follows:

1. When the one-way mobile phone card 1 is in the incoming or connected state, the card 2 is in the temporarily closed state, that is, when the card 1 is answering the phone, someone is calling your card 2. At this time, the other party heard that the phone you dialed was out of service, turned off, or could not be connected. After your call is over, Card 2 will automatically restore the signal function.

2. Similarly, when you use 1 card or 2 cards to surf the Internet, no matter which card calls, it will be temporarily disconnected after being connected. At this point, your background network program is temporarily disconnected. After the call, the networking program usually takes 2-3 seconds to go online.

3. Two-way mobile phones are different. When card 1 is connected, someone calls in card 2, and card 2 can see the other party's call. At this time, you can choose to pick up card 2 or hang up directly without hanging up the call of card 1.