DAVx5 on Android: Sync Infomaniak Calendars and Contacts

Android doesn\'t natively support CalDAV and CardDAV for syncing calendars and contacts with third-party servers like Infomaniak. DAVx5 is the go-to app to fill this gap. Here\'s how to set it up.

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Why DAVx5?

Android natively syncs with Google Calendar and Google Contacts. For any other service using CalDAV/CardDAV standards (like Infomaniak), you need a third-party app.

DAVx5 is:

Open source – Transparent and auditable code
Privacy-friendly – No tracking, no ads
Reliable – Used by millions of users
Compatible – Works with all CalDAV/CardDAV servers

Installing DAVx5

Option 1: Google Play Store (paid)

DAVx5 is available on the Play Store for about €5. This one-time purchase supports the development of the open source app.

DAVx5 on Google Play

Option 2: F-Droid (free)

The app is free on F-Droid, the open source app store:

Install F-Droid from f-droid.org
Search for "DAVx5" in F-Droid
Install the app

Support the Developers

If you use the free F-Droid version and find DAVx5 useful, consider making a donation to the developers through their website.

Configuring DAVx5 with Infomaniak

Initial Setup

Launch DAVx5

Open the app after installation

Grant Permissions

DAVx5 requests access to your calendar and contacts. Accept to enable synchronization.

Disable Battery Optimization

For reliable synchronization, DAVx5 needs to run in the background. Follow the on-screen instructions.

Add an Account

Tap the "+" button to add an account

Infomaniak Account Configuration

Choose "Log in with an email address"
Enter your full Infomaniak email address
Enter your password
Tap Log in

DAVx5 will automatically detect Infomaniak\'s CalDAV and CardDAV servers.

If Automatic Detection Fails

Choose "Log in with a URL" and enter:

Service	Base URL
CalDAV (calendars)	https://caldav.infomaniak.com
CardDAV (contacts)	https://carddav.infomaniak.com

Selecting Items to Sync

After connecting, DAVx5 displays your available calendars and address books:

Tap the account you just added
In the CalDAV tab, check the calendars to sync
In the CardDAV tab, check the address books
Tap the sync icon to start the first synchronization

Multiple Calendars?

If you have multiple Infomaniak calendars (personal, work, projects...), you can choose which ones to sync. Each calendar will appear separately in your Android Calendar app.

Sync Settings

Sync Frequency

By default, DAVx5 syncs periodically. To adjust:

Tap the account
Menu (three dots) → Settings
Sync interval: choose the frequency (15 min, 1h, 4h...)

Manual Sync

To force a synchronization:

In DAVx5: tap the sync icon
Or go to Android Settings → Accounts → DAVx5 → Sync

Using the Calendar and Contacts Apps

Once DAVx5 is configured, your Infomaniak calendars and contacts appear in the native Android apps:

Calendar

Open Google Calendar or your preferred calendar app
Your Infomaniak calendars appear in the list
You can show/hide them individually
New events are synced with Infomaniak

Contacts

Open the Contacts app
Your Infomaniak contacts are available
Changes are synced automatically

Troubleshooting

Sync Isn\'t Working

Check your credentials – Full email address and correct password
Disable battery optimization – Android may be blocking DAVx5
Check your internet connection
Check the logs – DAVx5 → Account → Debug logs

Certificate Error

Verify that your Android date/time is correct
Update DAVx5 to the latest version

Calendars/Contacts Don\'t Appear in Apps

Verify that you checked the items in DAVx5
Restart your phone
Check the Calendar/Contacts app permissions

Duplicate Contacts

If you have duplicates:

Disable Google Contacts sync if you no longer need it
Use the "Merge duplicates" feature in your Contacts app

Alternative: Infomaniak Mail App

Infomaniak offers its own Android app that natively handles email, calendars, and contacts. It\'s an alternative to DAVx5 if you want an all-in-one solution:

Infomaniak Mail on Google Play

Conclusion

DAVx5 is the essential tool for syncing your Infomaniak calendars and contacts on Android. Once configured (5 minutes), everything works seamlessly with your regular apps. Your data stays in Switzerland, and you remain in control.