I have installed xPrivacy on my phone. Which rights for which app do I have to set?
Why that complicated? There's no Xprivacy or other tool required to prevent your device from syncing contacts with Google. It's rather a question of your settings:
- If on account creation you decided to "Backup your data with Google", you might want to re-consider this, as this might include more personal data than just your contacts
- in Settings→Accounts & Sync you can define what should be synced with your online accounts (not restricted to Google). Switch off what you don't want to be synchronized.
- in your contacts app, you can chose the "default storage". Using something other than "Google" here would also keep new entries from being sync'ed with Google. Note, however, that you cannot move existing entries between the several possible storages directly; you might need to export them, remove them, and (after switching your default storage) re-import them.
Btw: Same applies to your calendar. Except there I don't know of any export/import feature in the calendar app, so for this part you probably need a 3rd party app.