Can't get the verification code for installation app download by SMS
When i downloaded application from App Store, the alert showed that " before you can make this purchase, you must verify your accounts. A verification code will be sent to your phone +81xxxxxx0897. Please enter the code on the following screen to proceed. Then I clicked the botton "Send SMS" but did not show any actions later. (my phone no. is +************, I have just changed the company network from Docomo to AU and changed from iPhone 6 to iPhone 8.)
<Personal Information Edited by Host>
iPhone 8, iOS 11.1