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When conducting second-hand transactions on SMT, the device registered in your account must be deleted in order to register the device properly in the second buyer's account.
You must register your device on your account to obtain paid content purchases and smooth after-sales service. Please be careful.

How to delete registered devices from an account
1. Log in to the website
2. Click on My Page in the upper right corner of the page
3. Click on the product registration button
4. When the window pops up, click the delete button on the right side of the registered product serial number
5. Click on the synchronization button in the upper right corner of the pop-up window