Open the App Store and slide to the bottom
Click the Apple ID and select "View Apple ID" in the pop-up window. Password verification is usually required.
Click "country/region" in account settings"
Select "change country or region"
Here you can select the region you want to switch to. I will use United States (USA) as an example.
Click "next" after selecting"
This page displays the protocol for the U.S. App Store. Click "Agree (Agree)" here. After clicking it, you must confirm it again.
This step is important. If you want to purchase a paid APP in the US region, you must carefully enter every project. If you only want to purchase a free APP, you can choose None as the payment method.
After entering the information, click "Next".
Apple will send you an email with updated account information.
Click Start Shopping to enter the US region!
The method is the same for converting to another zone or back to the original zone.