Different mobile phones support different sizes of SIM cards,
1, standard SIM card: 25mm×15mm; ;
2.Micro SIM card:12mm×15mm;
3.Nano SIM card: 12mm x 9mm.
Micro-SIM card, with the release and exposure of Apple's two new iPad and iPhone, Apple constantly challenges industry standards, one of which is to replace the standard size SIM card we usually use with a small Micro-SIM card.
In 20 12, 12, Apple officially obtained a patent on the connector of Micro SIM card. This patent is related to the connector of Micro SIM card, which can help users to insert SIM card more conveniently, ensure that the equipment will not be damaged when users insert it, and provide reliable mechanical performance.
Extended data
USIM (Universal Subscriber Identification Module) refers to the user's global identification card. Compared with the traditional SIM card, USIM card has at least two advantages:
1, more secure: The USIM card chip has advanced encryption function, which increases the two-way network authentication function, and has stronger security and confidentiality, ensuring that important contents such as user identity information are not easy to be cracked and stolen, and can better shield spam messages sent by pseudo base stations, making users' personal information more secure.
2, larger capacity: many careful users will find that the chip part is bigger after getting the USIM card. It is understood that the storage capacity of the USIM card has increased to 128KB, with a larger capacity and a more powerful phone book function. It can store up to 65,438+0,000 phone numbers, and for each phone, users can also choose to input other information such as email and alias, so as to easily manage contacts.
Baidu Encyclopedia: Mini SIM Card