Please tell us some basic information before asking for help:
Model Name: Zenfone 9
Rooted or not:
Frequency of Occurrence:
APP Name & APP Version (If your issue relates to the app):
In addition to information above, please also provide as much details as you can, e.g., using scenario, what troubleshooting you've already done, screenshot, etc.
Bought new Zenfone 9, got "This serial number already registered" message.