The Coin balance on your account is retrieved automatically if your new device runs on the same operating system as your previous device.
If you switch to a mobile device running on a different operating system (e.g., Android to iOS, iOS to Android), your Coin balance on your previous device does not transfer automatically to your new device.
Coins are not interchangeable between Android and iOS due to platform providers' policies. Platform providers (Google, Apple) restrict importing of payment information stored on other platforms or third parties.
For example:
Android: Coins purchased on Android devices can only be used on the WEBTOON app for Android. Theses Coins are not interchangeable with Coins purchased on iOS devices. They cannot be accessed or used on iOS devices.
iOS: Coins purchased on iOS devices can only be used on the WEBTOON app for iOS. Theses Coins are not interchangeable with Coins purchased on Android devices. They cannot be accessed or used on Android devices.