You accidentally roamed the App Store to a foreign country to download applications and games but did not know how to transfer to Vietnam. The following article will guide you on how to change the App Store region to Vietnam on your iPhone , iPad !
The instructions are done on the iPhone for the iPad tablet you can do the same.
1. Step 1: Open the App Store
Open the App Store > Select the icon of the iCloud account.

2. Step 2: Change Country or Region
Choose go to your iCloud> Choose Country / Region .

3. Step 3: Select Country
Select Change Country or Region > Select Vietnam .

4. Step 4: Fill in the address information
Select Agree > Select No > Enter information for roaming.

5. Step 5: Complete and reopen the application
Reopen App Store > Reload the app you want.

See also :
>>> Error of not downloading the app from the App store
>>> Attractive applications are being free on the App Store 21.06.2019
>>> How to delete purchase history, download apps on the App Store iPhone, iPad
The above article has guided you how to roam from abroad to Vietnam. Hope this article helps you.