The following best practices can help you get the most out of your Smart+ App Campaigns:
Creative volume: We suggest adding more than six creative assets during campaign creation.
Campaign duration: Let Smart+ run for at least 7 days to pass the Learning Phase.
Campaign budget:
Smart+ Maximum Delivery campaign: We recommend starting with a daily budget of at least 10x your historical CPA.
Smart+ Cost Cap campaigns: We recommend adding more than three times your usual daily campaign budget or at least 30 times your target CPA.
Campaign bid: Set at least 1.2 times your historical average CPA (could be from your maximum delivery campaigns) as the target CPA in Smart+ Android Cost Cap campaigns.
Multilingual creative tool: We recommend keeping the default setting for the multilingual creative tool on to help improve creative relevancy, even for single market campaigns.