Please enter postpaid phone number in Vietnam

In my country no one can add phone number to their battle net account they want to play call of duty game on battle net but when adding phone number to account it says error please enter a post-paid phone number sent to support Battle Net’s support is also unable to add a phone number to their account forcing them to switch to another platform, Steam. It’s quite sad not knowing when this error will be fixed in our country, and a Another quite serious security error that they did not fix on the battle net platform is being able to delete the phone number on the account immediately without needing the sms code on the phone number which is really dangerous, even changing the email is also possible. An easy way without a notification code about the email account in use

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