Although I have used it for months, two days ago when I tried to use my Samsung email and sign on, I got an error response "Uh oh something happened try again later" I have been on the phone with both ATT and Yahoo customer support trying to get this resolved with both of them pointing the finger at the other one but no resolution. On multiple computers, I have no problem signing into my account. From two different Samsung phones, a Samsung tablet and a generic tablet, I get the same error. One time I did get a text script error that stated "err_address_unreachable". Different locations, different networks, have all been tried.