Call the mobile phone with two cards, one card can get through, and the other card prompts the opening of SMS calling service. What is this?

What is a dual-card dual-standby one-way mobile phone? What does this mean?

Dual-card dual-standby single-pass, that is, two mobile phone cards are constantly switched between the two networks of the two cards through the underlying software and control chip of the mobile phone, and the switching time is very fast, thus ensuring that the two cards are connected to the network at the same time and are in a standby state. But it can only talk in a single cartoon, that is to say, when A card is talking, B card is offline, when B card is talking, AB card is in standby state at the same time. When you answer someone's phone

One-way call, people hear that the number you dialed is busy.

Two-way, when people hear the beep, your mobile phone will sense it, and you can choose whether to answer the phone or not.

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When you answer someone's phone

One-way call, people hear that the number you dialed is busy.

Two-way, when people hear the beep, your mobile phone will sense it, and you can choose whether to answer the phone or not.

There can only be one cartoon at a time, and both cards are spare.

What is the difference between dual card dual standby dual pass and dual card dual standby single pass? Double calling is when you are on the phone! A call came in on the second card. You can choose to answer or not! One-way call means that the second card is on the phone when you are on the phone! . One-way call means that one card answers the phone and the other card is on the phone. Two-way call can be normal. The first one can be used by inserting two cards. The second one has two card slots, but only one card can be used. You can switch between card one and card two.

What is dual card, dual standby and single call? One-way communication is relative to two-way communication. In fact, dual-card dual-standby one-way communication means that the mobile phone supports dual cards, but the standby of two mobile phone cards needs to be manually switched, which is one of the differences from dual-card dual-standby two-way communication. In fact, dual-card dual-standby one-way mobile phone is not a real mobile phone, because it does not really achieve the effect of dual-card dual-standby.

The principle of dual-card dual-standby one-way mobile phone is to switch between two networks with a control IC (chip) through software and automatically search for networks. Because the switching time is very short, such as the frequency of one thousandth of a millisecond, it is imperceptible to consumers.

Realizing that the network has been switched is equivalent to realizing the simultaneous standby of two cards. "However, when using a card, another card can't be called in, and the owner doesn't know that there is a call, sometimes it is very troublesome!

What does dual card, dual standby and single call mean? When you answer someone's phone, it's a one-way call. They hear the phone you dialed double-calling. When they hear the beep, your mobile phone will have a sense. You can choose whether to answer this call or not. In the traditional sense, dual card dual standby means that two user cards can be supported at the same time, such as SIM cards of two cities or two operators. Dual standby means that you can stand by and talk to two numbers at the same time. For example, if you insert a Beijing card and a Shanghai card, both numbers can be online, you can answer the phone or make a phone call; When one of the numbers is on the phone, you can call the other number and make a call. At present, the standard dual-card dual-standby, in fact, regulates dual-card dual-standby dual-pass, "standby" refers to what we usually call standby state, and "pass" refers to call state. At this time, two numbers can talk to the bystander at the same time. Of course, the call here refers to the state of the call, that is, two mobile phones with two cards can be online at the same time; The headset, microphone and other devices of mobile phones are usually only connected to one of them; Users can switch between two online sessions. Accordingly, dual card dual standby single call means that two numbers can be "standby" at the same time ... Click to load more content. ...

What is the "dual card dual standby single pass function"? Inserting only one card is a one-way call. I thank a mobile phone for connecting signals from two communication networks at the same time (by putting two cards), which is the contribution of China's mobile phone industry to the global mobile communication industry. Since 2006, China Unicom, ZTE, Yulong and other enterprises launched a "dual-mode dual-standby" mobile phone that can receive both GSM (Global System for Mobile Communications) and CDMA (Code Division Multiple Access), some enterprises have keenly grasped the demand that consumers have two GSM numbers at the same time, and launched a "dual-G dual-standby" mobile phone with two GSM numbers online at the same time. In May, 2007, China Mobile officially listed this kind of mobile phone in the group procurement plan. Considering the difference with GSM/CDMA "dual-mode dual-standby" mobile phone, it was named "dual-card dual-standby" mobile phone. "At present, the principle of the dual-card dual-standby single-pass scheme is that through software, a control IC (chip) is used to constantly switch between two networks and automatically search for networks. Because the switching time is very, very short, such as the frequency of one thousandth of a millisecond, consumers can't feel it ... Click to load more ... Title: Intermediate group should be. . . You can insert two calling cards. . (Mobile Unicom is good. . But telecom cards may not generally support it. )。 . This is a dual card. . Dual standby means that they can apply at the same time. Online. . . It's good to send text messages or something. . But? . You can only use one card when talking. . Not if the other one calls. . Now many mobile phones support that you can talk to several people at the same time. . )。

What is a dual-card dual-standby one-way mobile phone? Hello, on a dual-card dual-standby single-call mobile phone, two card numbers are inserted into the mobile phone at the same time, so it is impossible to make voice calls or connect to the Internet at the same time. When one card number is on the phone or surfing the Internet, the other card number must be closed, so that the other card number cannot answer the phone or surf the Internet at the same time. If someone dials another card number at this time, they may hear the message "The number you dialed is not in service area" and "The subscriber you dialed cannot be connected temporarily, please dial later", which is caused by the design of dual-card dual standby single call and has nothing to do with the network conditions of operators. One-way communication is because the mobile phone is designed as a single chip, which can greatly improve the standby time and reduce power consumption. Users are advised to consult local operators and start services such as "missed call reminder", "incoming call reminder" and "secretarial service" to avoid the problem of missed calls without reminders in the above scenarios. Note: At present, many mobile phones have optimized the dual card dual standby single call system, which exists in the wireless and network settings of mobile phones.