None of the solutions helped me. My other tablet works fine. This happens no matter the wifi I connect to so it isn't the router. It will connect to a network for about 2 seconds then the Wi-Fi will turn off then back on again connect then back off. It is very frustrating. I've done a factory reset. I've cleared cashe partition I've deleted all networks I've even taken it to Samsung to make sure it's updated on software. They didn't know what was wrong either. Getting ready to trash body knows what is wrong or how to fix