Summary:

Create an Opportunity and assign it to a team.
Now log into the iPhone with a user from this team and sync the iPhone using the sync settings "MyTeam Opportunities".

Symptoms:

The opportunity is not synced to the iPhone App.

Cause:

It appears the the sync option "My Team Opportunities" is not syncing any data to the iPhone.

Status:

This issue has been escalated to development and will be resolved in a future release of Sage CRM iPhone App. 

More information:

It appears that contacts are not synced with the sync setting "My team contacts"