Has there been a fix for this yet? We use this phone for employee phones and at least two are constantly doing everything that the original complainant specified except we haven't noticed a problem with the volume. Also, ours do this about 5 times a day or more. It really depends on how many times we open it. But about every other time it has a black screen, after you close it and reopen it is when it is upside down, text is backwards and the color scheme is all messed up. This is extremely aggravating...