As of 2015, customers can reach Samsung cell phone technical support at 1-800-726-7864, or 1-800-SAMSUNG. Live chat and email support are also available on Samsung.com/Support.
To access live chat and email options, navigate to Samsung.com/Support and click on Cell Phones under Phone & Tablet. On the next page, click on your carrier or enter the model number of your phone. Click on Live Chat or Email Support near the bottom of the page.
Samsung also offers troubleshooting tips and frequently asked questions on its support page. The page includes a list of "Topics I Need Help With," featuring links to each solution.