One of the good and up-to-date apps for using v2ray on iPhone with iOS 14 and above is the Streisand app. To enter the config code on iPhone, first install the Streisand app via the Apple Store, then follow the steps below:

1. After installing the app, copy the configuration you purchased from NetShekan completely to your phone's clipboard, then tap the + icon at the top right:

2. In the opened menu, tap on "Import from Clipboard":

3. If the config has been copied correctly to the clipboard, a new config will be added to the Local Profiles section:

4. Now, by tapping on "Connect," you will be asked to allow connection to the free internet. By tapping "Allow," the process will be completed:

When the icon turns green, it means your connection is active, and to disconnect, you need to tap on "Connect" again.