Yahoo Help Phone Number USA 1-855-515-5559 is used to secure the yahoo mail issues from different harmful affecting viruses. The issues that can be encounter with yahoo support are as Setup error, uninstalling problem, update & Upgrade error, Product Key activation, unable to download antivirus etc. So, these are some of the issues for which the technicians provide tech support. Our services are available only for technical issues. If customers are facing such issue then they are required to dial the Yahoo Customer Care Toll Free Number USA for best resolution.