I have tried this on Android devices and it works fine, but for iOS I am having problems. I have a iPhone 6 device and when I try to display ads on this device the ads are showing up but along with that after few seconds a black video popup is showing up with default player controls. When I click on close button it hides the black video popup and then I can use the app. The same thing doesn't happen on Android devices or on iPad devices.
I am using below code to show the banner ads
<Banner
adSize= {DSWPConfig.adPolicy.adSize.mediumRectangle}
validAdSizes={[DSWPConfig.adPolicy.adSize.mediumRectangle]}
adUnitID={item.adUnitId}
style = {style?.adStyle}
/>