Question: how to import ics file in android calendar?
Answer: Save the vCalendar file on your Android device. ... 
Download the ICS Importer app from Google Play. ... 
Open the ICS Importer app.
Tap the "Choose calendar" button. ... 
Tap the "Open File" button. ... 
Tap the file you want to import.
Tap the "Add to Calendar" button, which replaces the "Open File" button after you select the file.