What does dual card dual standby mean?

DSDS (Dual SIM Dual Standby) is a new term in the mobile phone industry. Dual card dual standby means inserting two mobile phone cards into the mobile phone, and the mobile phone can stand by at the same time. Consumers can use two GSM network mobile phone numbers and two CDMA network mobile phone numbers on one mobile phone at the same time. Under normal circumstances, dual-card dual-standby mobile phones can be set as follows: only Sim 1 card is opened; Only sim2 card is opened; Double card open. With the dual-card dual-standby mobile phone, busy people don't have to hold two mobile phones in their hands, which is simple and convenient.

Extended data:

Two dual card schemes:

1. First, two chipsets are used, that is, two sets of baseband chips, RF chips and storage systems are installed in the mobile phone, which is equivalent to combining two complete mobile phone motherboards in the same mobile phone case. In this way, two SIM cards can work at the same time without switching on and off, but the problem is that the cost is almost twice that of ordinary mobile phones, and the power consumption is often twice that of ordinary mobile phones, which is the solution market adopted by many bulky dual-card dual-standby mobile phones.

2. One is to add an analog switch to the traditional mobile phone chipset and manually switch the network. The latter is usually a mobile phone with "dual card and single standby", but later some enterprises used it for dual standby mobile phones, which is prone to problems such as incompatibility with various SIM cards and immature control software, and the dropped call rate is high.

Baidu encyclopedia-dual card dual standby

Baidu encyclopedia-dual card dual standby mobile phone