Hi,
If your mobile device has an internet connection then it should at least automatically update before a scan.
Could you please try to manually update your virus definitions and let me know if there is any error message?
Manual update: Open AMS > Menu > Settings > Updates > Check for update
Manual update worked, but I don't understand why after 3 hours of being connected it would not update.
I didn't update it manually on purpose to see if it updated automatically.
I also noticed that even in my smartphone android it does not update immediately, the definitions of the previous day appear and if I do not update it manually it does not update automatically.
The update settings are correct.