There is no doubt that Google has made massive progress helping advertisers get a return from users on mobile devices. That being said, a significant percentage of the time, mobiles dont perform as well as desktops.
If this applies to you and your patience is up with advertising on mobile devices, the above video will show you how to remove them from your campaign.
Where I have added a 100% decrease in bid (this switches off mobile devices), you can add a decrease of less than this e.g. 50%, if you are getting conversions, but not quite at the cost you need.
About the author
Thomas Green is a Certified Adwords Professional and specialises in direct response marketing. He has over 6 years PPC experience and has a straight forward approach to what works and what doesn’t!