We recently exposed the 
Device column in the 
Click Performance Report. The 
Device column can have 
TABLET, 
HIGH_END_MOBILE or 
DESKTOP as its valid values. This is a segmentation column, so requesting it will prevent zero impression rows from being returned. If you have migrated to 
Enhanced Campaigns, then this column can be useful in finding out how your ads performed on various platforms, and adjusting your mobile 
bid modifier accordingly.
If you face any issues with the above changes or have any questions about this feature, you can ask us on our 
developer forum, or at the upcoming 
GDL Office Hours with the Developer Relations team.
 - Anash P. Oommen, AdWords API Team
 - Anash P. Oommen, AdWords API Team