my lg g3, running android version 6.0, has begun downloading unknown files almost every night between 11pm -12am. avg scans show all apps are secure and no viruses, etc., found. when i click the file from the peek bar it doesn't show a name or allow the download to be stopped. turning off wifi and/or rebooting only turns off the download until wifi reconnects. there is no record of these downloads in file manager or the download folder. also, it's not app updates because they all require permission. any suggestions would be GREATLY appreciated.