I have received the 4G temporary card. How to change it by SMS?

4G self-service card replacement method 1: log in to the online business hall? Enter the activity page-activate the 4G card-click Activate Now-enter the self-service supplementary card number and verification code to activate directly. Method 2: SMS activation. 1. Use 3G mobile phone to send "JH4G" to 1000 1, and send the successful SMS to 3G mobile phone; 2. After successful activation, the 3G mobile phone card is invalid. Insert the 4G card into the 4G mobile phone and restart it to use. For more service offers, click on "official website" Customer Service 2 19 below to answer your questions.