If you don't have that big card, you can also go to the business hall with your ID card and service password to change the 2G package to the 3G package.

If you have not changed the service password, it is possible that the initial password cannot be used for business. I suggest you change your password first.

You can reset the password through the following channels:

1. You can log in to the online business hall/homepage, click Self-service > User Login > Forgot Password, and follow the prompts;

2. Log in to the mobile phone business hall client, click Forgot Password on the login page, enter the mobile phone number and verification code, and then click Next. At this time, your mobile phone will receive a 4-digit SMS password, enter SMS password, new password, verification code and other information, and then click Next to reset the service password;

3. Send the free SMS instruction "MMCZ#6 new password" to 100 10.