Hi Hsahi, We appreciate your feedback on the response time, and for optimal performance, we ask that you please ensure you've got the latest firmware version installed on your DU7200 TV. You can check this by going to Home > Menu > Settings > Support > Software Update. You may also want to further optimize performance with the self-diagnostic tool, which checks memory, frees up unused cached memory, and closes background apps. Go to: Home > Menu > Settings > Support > Device Care > Start Device Care. If you need more help, Samsung is here for you! Please call us at 1-800-SAMSUNG, 8 AM - 12 AM EST, seven days a week. Our LiveChat agents are also available by clicking on the ‘Support’ link on our website. ~ Samsung Advisor

Hi Anthony, Please know that we back this Samsung TV with a 1-year limited manufacturer's warranty, including authorized repair for manufacturer defect, if purchased brand-new directly from an authorized seller. To schedule a warranty appointment, please contact us at 1-800-SAMSUNG, 8 AM - 12 AM EST, seven days a week. Our LiveChat agents are also available by clicking on the ‘Support’ link on our website. ~ Samsung Advisor

Hi Did not work, We appreciate your feedback on the Samsung DU7200 TV. I'm sorry to hear you are experiencing issues with your Wi-Fi disconnecting from the TV. First, let's ensure you are running the latest Firmware. Go to Settings> Support> Software Update. I recommend enabling auto-updates to ensure you do not miss any Firmware Updates. Go to Settings> Support> Software Update> then select Auto Update. Next, let's try running a cold boot on your TV. To do so, hold down the Power button on the Samsung TV remote until the TV turns off and then on again. This should take about 5 seconds. I hope these tips help resolve your concerns. If you need more help, Samsung is here for you! Please call us at 1-800-SAMSUNG, 8 AM - 12 AM EST, seven days a week. Our LiveChat agents are also available by clicking on the ‘Support’ link on our website. ~ Samsung Advisor

Hi Lonnie, We appreciate you taking the time to let us know about your experience with your TV. So that we can better troubleshoot this issue and provide steps towards a solution, please contact Samsung Support at 1-800-SAMSUNG, 8AM - 12AM EST, 7 days a week. Or visit us on the Samsung website and click on the ‘Support’ link for: • LiveChat • Manuals, Software, & Warranty Info ~ Samsung Advisor