64K和128K SIM卡之间的区别

用户识别模块(SIM)卡已插入手机。 SIM卡用于唯一标识网络用户。 SIM卡用于存储消息和联系信息。它还存储有关所连接塔架和订户身份验证密钥的信息。 SIM卡有多种变体。 “ K”代表特定SIM卡中可用于存储的千字节内存。

SIM卡的较早版本包含32 KB的内存，而较新的版本具有64、128和256K的内存。通常在SIM卡上提到此内存信息。内存空间越大，它就越新，并且具有更多的功能。较新的版本用于3G，4G和LTE Internet连接。最新版本的128K及更高版本具有跟踪系统，以防手机丢失。

64K和128K SIM卡之间的区别：

S.No.	64K	128K
1.	It was very popular before 2003.	It has become more popular than 64K SIM cards after 2003.
2.	It can be used to store contact information of about 500 people.	It can be used to store contact information of about 600 or more people (approximate value, as it depends upon the provider).	3.	It is used for 3G and 4G data services.	It is used for 4G and later data services.
4.	It does not have computer synchronization and recovery in case of theft or loss of mobile devices.	It has the feature of computer synchronization and recovery in case of theft or loss of mobile devices.	5.	The network operators can run less mobile network operations on it because it has lesser storage.	The network operators can run more mobile network operations on it because it has more storage.
6.	It has 64 Kilobytes of storage space.	It has 128 Kilobytes of storage space.
7.	It may or may not have SMS lock, auto roaming and direct access to social network accounts, depending on the povider.	It has SMS lock, auto roaming and direct access to social network accounts.