What is the difference between dual card dual standby single pass and dual pass

Difference: 1. Dual standby and dual pass means that one mobile phone is connected to signals from two communication networks at the same time; dual standby and single pass means that two mobile phone cards use the underlying software and control chip of the mobile phone. Continuously switching between the two networks on both cards. 2. The methods of receiving calls are different. Both cards in dual-card dual-pass can be connected, but you can only talk to one of them, but dual-card single pass cannot.

#The operating environment of this tutorial: IOS15 system, iphone12 mobile phone.

The difference between dual card dual standby single pass and dual pass

1. Different characteristics:

1. Dual standby and dual pass: refers to a mobile phone receiving signals from two communication networks at the same time;

2. Dual standby and single pass: two mobile phone cards pass through the bottom layer of the phone The software and control chip constantly switch between the two networks of the two cards.

2. Different ways of receiving calls:

1. Dual-SIM single pass: After inserting two SIM cards A and B into the mobile phone, the A card During the call, if someone calls Card B, it will prompt that the call cannot be connected or is not in the service area. When the call with Card A ends, the system will not display the missed call reminder of Card B. In addition, since a dual-SIM dual-standby mobile phone needs to manually specify a certain SIM card for the networking function (assumed to be B), then the networking function of the B card will also be blocked when the A card makes a call.

2. Dual-SIM Dual-Connect: After two SIM cards A and B are inserted into the mobile phone, during a call on the A card, if someone calls the B card, they will hear a "beep" sound. Prompt sound (busy tone), you can make two choices at this time: continue to keep the call on card A, and the system will display the missed call on card B after the call; choose to answer the call on card B, and the system will automatically keep the call on card A. , after the call on card B ends, you can also switch back to the call on card A (as long as the other party has not hung up).

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