If you want to use your Serea lock while in flight mode, please note that only the main function of the app – unlocking your lock – does not require an internet connection.
However, several additional features do require an internet connection and will not work in offline or flight mode. These include:
The Sharing function
Adding a new lock
Renaming your lock
Deleting your lock
Changing your password, username, or profile picture
Deleting your account
Viewing your complete unlocking history
What does this mean in practice?
You can use your registered lock normally without internet access. But to enjoy all the extra features of the app, an internet connection is necessary.