Eight Premium users are able to export their Eight contacts to their device’s contact list.
This is a one-way sync which will export your Eight contacts to your device and keep them up to date. Your device’s contacts will not be imported into Eight.
Access your Eight settings (via the ‘gear’ in the top right of your profile).
Tap on ‘Export contacts’ and tap on ‘Activate’.
You can deactivate this function at any time. This will leave the contacts in your device’s contact list, but will no longer keep them up to date.
For further information, click [here].
Please see [here] if you are having sync issues on your iPhone.