DavX5
CalDav/CardDav Sync
Enables syncing the default phone apps with many online calendar/contacts sync servers, including Google Calendar.
Or download from the official F-droid repository
Set-up Instructions
Instructions for Google Calendar sync can be found here.
For a complete list of tested services and instructions, see the link below:
Install
1. Download the APK from the above link and copy to your flashdrive.
2. Insert the flash drive into your Ghost Phone with the USB-C adapter.
3. Tap "Explore" on the notification that appears.
4. Tap Aegis.apk
5. Tap "continue" on the popup that appears, then "Install."
6. Enjoy.
Credits
Davx5 is an open source app developed by Bitfire Web Engineering. Original source code is available here. The developer of this original code is not affiliated with Ghost Mode or the Ghost Phone.