How to switch traffic between dual card and dual standby? It's very simple, just set it like this.

Dual-card dual-standby mobile phones need to operate in "SIM card management" when switching data traffic.

Taking Huawei P20Pro as an example, the specific operation steps are as follows:

1. Click the "Settings" APP on the desktop to enter the "Settings" function list.

2. Click "Mobile Network" in the "Settings" function list to enter the "Mobile Network" function list.

3. In the "Mobile Network" function list, click "SIM card management".

4. Through the SIM card management window, select "Card 1" or "Card 2" in the "Default Mobile Data" function bar.

5. In the pop-up "Switch Default Mobile Data Card" dialog box, click "Switch" to finish the operation.

Matters needing attention

1. When forcibly switching data traffic, pay attention to whether there is enough traffic available in the number packet. If there is little available traffic in the number package, pay attention to the SMS reminder of the operator to avoid using the traffic outside the package, which will cause great economic losses.

2. In general, the system will use the mobile data of 1 card by default. If you are not proficient in the above operations, you can switch mobile data by changing SIM. That is, by exchanging the card 2 with the card 1, the mobile data of the original card 2 can be used. This method will be simpler than the above operation.