Sabu 77When u download anything u will be shown that in TOTAL VOLUMEWhen u download in night time...it will add in TOTAL VOLUME,...not in Sum Traffic Excluding Night UnlimitedBut your total usage is Sum Traffic Excluding Night UnlimitedDownload anything at night time...but dont cross your DOWNLOAD LIMIT in Sum Traffic Excluding Night UnlimitedIf u have H500...download till u r shown 2.5 gb in Sum Traffic Excluding Night Unlimited