Moving your region to the United States won't heavily impact your phone's AppStore. Essentially, region switching is about changing the area/country settings for AppStore to access the app/game repository in that country. After switching regions, your AppStore will adapt its language to the new country, for instance, switching to English when moving to the US.

Other features like searching, downloading, and installing apps on the AppStore will continue to function as normal. So, you don't need to worry when switching or changing regions. However, if you're not familiar with English, using the AppStore after switching to the US might be a bit challenging.
Guide on how to switch your AppStore region to the US
There are 2 methods for changing your AppStore region: doing it directly on the AppStore or through Settings on your iPhone. Specifically, follow the detailed instructions below to swiftly change regions.
Using the AppStore app
To switch your AppStore region to the United States (USA), you can directly change the code on this app store. Here's a specific guide:
Step 1: Access the AppStore on your iPhone or iPad > tap on the avatar icon at the top right of the screen. Then, tap on your account name to access the settings features inside.
Step 2: Tap on the “country/region” section > select “change country or region” as shown in the instructional image.
Step 3: Scroll down to find and select the United States as the country > press “agree”.

Step 4: Then, to switch the Appstore region to the USA, you need to fill in the information in the section to complete the transfer. When filling out the information, pay attention to the following items: Payment method, Payment name, and Payment address.
Payment method: Select “None”.
Payment name: Your name.
Payment address:
-
- City: East
- State: A – California
- Zip: 92274
- Phone: 760 – 845 – 6612

Step 5: After filling out the information, press “Next” to complete and continue. The AppStore will automatically return to the main interface with English language. Now, you can search for and download the games/apps you want.
Using the Settings app
Besides the method above, users can also switch their AppStore region to the United States (USA) through Settings on their iPhone. Here's a specific guide:
Step 1: Open Settings > select “iTunes & AppStore” > tap on your Apple ID at the top of the screen.
Step 2: Choose “View Apple ID” > continue to click on “Country/Region”, then find and select the United States from the list.

Step 3: At this point, you just need to follow the instructions as above (from step 4 onwards). Specifically, you need to fill in information in the Payment method, Payment name, and Payment address sections (as above) and press “Done” to complete.
Step 4: Return to the AppStore after switching to the United States region > search for and install apps or games as usual.
Guide on how to switch the AppStore region back to Vietnam
After switching the AppStore region to the United States to install apps, you can follow similar steps to switch back to Vietnam. Specifically:
Step 1: Go to “Settings” > select “iTunes & AppStore” > “Apple ID” as usual.
Step 2: In the “Apple ID” section > go to “Media & Purchase” > press “View account” and then click on the “change country/region” feature.

Step 3: Find Vietnam in the list of countries > press “Agree” to accept the app's terms.
Step 4: To switch the Appstore region code from the United States back to Vietnam. You fill in information in the fields > press “Done” to complete the process of changing the AppStore region back to Vietnam.
Payment method: select “None”.
Payment name: Your name.
Payment address:
- Street: Pham Van Dong (or use your own street name).
- City: Ho Chi Minh
- ZIP Code: 70000
- Phone: Enter your phone number.
Step 5: Now you know how to quickly and accurately switch back to Vietnam on the AppStore. The AppStore will automatically return to its original interface for you to browse and install apps as usual.
Hope the information above helps you understand how to switch the Appstore region to the United States (USA) and change the region code back to Vietnam. Feel free to leave a comment below if you encounter any issues during the region switch.
See more articles in the category: App, Phone Tricks