How to self-service replace 4G USIM card?

1. China Mobile upgrades its 4G card for free.

First of all, if you find it difficult to change your card, you can take the time to go to China Mobile Business Hall to handle the service of upgrading the 2G/3G SIM card to the 4G card. This service is completely free. Of course, you need to bring the original ID card and mobile phone card.

Second, China Mobile's self-service card replacement process.

Let's talk about the mobile 4G self-service card replacement steps. First of all, you need to get a USIM card with self-service card replacement function. The USIM card is a gift when you buy a new 4G mobile phone.

At the same time, for the sake of safety, please back up the address book and SMS in the SIM card you are using in advance.

Prepare two mobile phones, A and B. A is a 4G mobile phone. Insert the USIM card into the card slot and keep it turned on. At the same time, ensure that SIM cards B and B in the mobile phone can communicate normally.

Mobile phone B sends SMS zzhk temporary number to 10086 (the temporary number is generally printed in the lower left corner of USIM card).

4G smart phone A will receive a short message from 10086, reply to Y, wait a moment, and the phone screen shows that the card writing is successful. Click OK.

Mobile phone B will receive a short message from 10086. After replying to xkcg, the card will be changed successfully.