Nowadays, with the advent of 5G network, usim card has become a key word mentioned by many media. So what is usim card?What does a usim card do?Many of you are not familiar with usim card, so lets introduce usim card. 
What is a usim card?
Professionally speaking, usim card is the third generation of mobile phone card, generally we still use ordinary SIM card at present.The English version of usim is called the Universal Subscriber Identity Module, which can also be called the upgraded version of SIM card.The main difference between usim and ordinary SIM is that usim card upgrades the algorithm in the aspect of security, and adds the authentication function of card to the network, resulting in higher security.
Generally speaking, usim card is the updated generation and upgraded version of ordinary SIM card. It supports 5G network and is compatible with 4G and GSM network down the line. 5G smart phones must use usim card to experience 5G network.

What is a usim card?What does a usim card do?

The function of usim card is the same as that of ordinary SIM card, which is mainly used to meet the communication needs of mobile phone users, but its internal structure design and function are more powerful than ordinary SIM card.The most mentioned usim card is the advent of 5G era, because in order to experience 5G network, 5G mobile phones must replace the usim card with a newer generation, while ordinary SIM CARDS can only support 4G network at most.

With the official commercialization of 5G network, many friends are now in a hurry to replace the usim card. The biggest advantage of replacing the usim card is that it can still be used in the 4G mobile phone. Besides, after purchasing the 5G mobile phone, you can experience the 5G network directly by replacing it without changing the number.

Many users may be wondering why they need to change their usim card to experience 5G networks without having to change their phone number.For this problem, it is mainly based on security considerations.The important function of SIM card is identity recognition, so it must have encryption function to ensure that identity privacy is not stolen. Nowadays, the security of ordinary SIM card is very low, but in the era of 5G, usim card needs to bear the encryption function of higher level, that is to say, the security is stronger and it is not easy to be cracked.

5G usim CARDS with new encryption functions will take an intolerable amount of time even if they are broken violently. For those who want to improve SIM security and plan to buy 5G mobile phones in the future, please go to the business hall to replace the latest usim card in advance.

The above is a brief introduction about what usim card is. If you want to experience 5G network, you can go to the business hall to replace it.