sms.db not recognized

[stefarossi]

I'm trying to "convert" an Android mmssms.db database to an iOS one.
This is the output of the command:

$ smstools --type ios6 mmssms.db out.db
5086 messages read in 0 seconds from mmssms.db using parser smstools.android.Android
  latest text: ###########:
  #############
sorting all 5086 texts by date
Creating empty iOS 6 SQLITE db
built handles table with 99, chat with 144, chat_handle_join with 144 entries
built messages table with 5086 entries
changes saved to out.db
saved messages to out.db

After moving the file to /private/var/mobile/Library/SMS/ on an iOS 7 device (iPhone 4) and checking the permissions, the Messages app doesn't show any message. Am I doing something wrong?

Thank you.