When trying to import a vcs-file as exported by MyPhoneExplorer (1.7.0) into a Google calendar, I get the following error message:
File is not properly formatted
Line: 8
On line 8, it states:
RRULE:YM1 7 #0
Importing via an .ics file does work, so it's not a big problem, but I think FJ would like to have the exported files to be according to the format's standards. Hence this message.
iCalendar and vCalendar are very similar. But one major diffrence is the format of the RRULE-Tag. I think the developers of Google did only implement the iCal-Standard and they parse vcs-Files in the same way as ics-Files.