Bought an s8 in mid feb. It looked ok, however it started having problems almost immediately. It charged quickly and drained quickly. It froze, jittered and rang people sporadically. Because I was going to travel and needed a phone, I delayed returning it. When I came home, I dropped it. This did not make its performance worse. However, because the screen was marked they said the warranty was void. They did not seem to have examined the phone nor tell me what was wrong with it. This is the first time I have had a problem with a refurbished phone. Needless to say I SHALL NEVER BUY FROM THIS COMPANY again.