I purchased the S6 dual or wq n95, and found that after installing the
SIM card as instructed, contacting AT&T/Cingular etc., the phone still says unregistered. Or no connection signal is coming through. I told them about it also being a Triband, which according to them, should have nothing to do with it. Even with the SIM connected to the S6, they were showing connections on their end. It's difficult to get the manufacturers of this phone to response to any
emails regarding this product. Im beginning to think we're SOL