ad mob adds in android tablet

Solar2D Monetization (in-app purchases, ads, etc.)
#1

I’m using

showAd( “banner”) in an android app. It works fine in my phone but not in my tablet.

However if I choose “interstitial”  banner type it works on both.

Is there a way to detect android tablet like this:

system.getInfo(“model”) == “iPad”  

Or can I get the adds in my tablet using banner style ads too?

I have Samsung Galaxy Tab 2 and Samsung S3 phone.