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标题: Types of dual sim [打印本页]

作者: shruthi3487 时间: 2019-04-06 13:54
标题: Types of dual sim
[br] (, 下载次数: 0) [br]If you decide to purchase a Dual SIM smartphone, you should know that there are several types of Dual SIM implementations that work differently, and some are better than others. [br][br]These are the types of Dual SIM implementations available:[br][br]Dual SIM Single Standby (Passive)- this is the worst implementation of the Dual SIM technology, and affordable phones commonly use it. A Dual SIM Passive phone is capable of using two different SIM cards, but only one of them can be active at any time. That means that when one SIM card works, the other is unreachable. To use the second SIM card, you need to activate it manually, and the first SIM deactivates when you do that. You do not find this implementation in smartphones, just older mobile phones.[br][br][ul][li]Dual SIM Dual Active - this implementation allows you to make phone calls from both of the SIM cards inside your smartphone. It can also receive calls on either of the two SIM cards, at the same time. Dual SIM Dual Activesmartphones have both their SIM cards permanently active and, when you are having a conversation on one of them, the other still works and receives calls, messages or data. For instance, if you have a call on the first SIM and you are getting another call on the second SIM, you are notified about it. The disadvantage of Dual SIM Dual Active phones is that these devices have two radio transceivers, one for each SIM card. It means that they consume more battery than regular Single SIM smartphones and they are more expensive to manufacture, leading to a higher price. It is also the reason why it is challenging to find smartphones with this implementation.[br][/li][/ul][ul][li]Dual SIM Dual Standby - it is a hybrid between Dual SIM Standbyand Dual SIM Dual Active. Dual SIM Dual Standby lets your smartphone have two active SIM cards, and they both use only one radio transceiver. However, they are both active only as long as you are not using them, hence the name of Dual Standby. As long as the SIM cards are both in Standby mode, you can make and receive calls on any of them. However, once you take a call on one SIM card, the other becomes inactive until the first card is no longer actively used. That is true if one or both of the mobile networks you are connected to, use 2G for phone calls. If your mobile network(s) are 3G or 4G and do not use 2G for voice calls, this limitation does not exist. This is not ideal, but the technology is less expensive and more widespread in modern smartphones. Dual standby phones only require additional space for one more SIM card. So, the cost increase compared to the single SIM version is marginal.[br][/li][/ul]To make it easier for you to understand the differences between the different kinds of Dual SIM implementations, we created this simple comparison table:[br][br][br] (, 下载次数: 0) [br][br]Can you use your 3G/4G data plan on both SIM cards, when using a Dual SIM smartphone?[br][br]The short answer is Yes, but it depends on the Dual SIM implementation that was chosen by the manufacturer of your smartphone. Manufacturers look at how much their smartphones cost to build and their profit margins. Making a Dual SIM smartphone with a SIM card that supports 4G data connections and the other 2G, is easy and affordable. 4G + 2G can be combined in a Dual SIM Dual Standby mode and use the same radio frequencies. However, if you want to build a Dual SIM smartphone that supports 4G connections on one of its SIM cards and 3G or even 4G on the other, that would mean that the processor on the smartphone must be powerful enough to support two high-speed data connections simultaneously and probably the costs would be rather high. Most Dual SIM smartphones on the market offer 4G + 2G data connections.[br]

作者: Dinesh Vishwakarma 时间: 2019-04-06 13:57
thanks to sharing the XClub

作者: sk001 时间: 2019-04-06 14:01
good information sir

作者: Hegde 时间: 2019-04-06 14:30
Good share

作者: Thinesh 时间: 2019-04-06 16:42
Good share

作者: sakhr68 时间: 2019-04-07 15:14
Thanks brother for sharing

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