Samsung smart care centre - S-view issue

It's now been 4 times in the space of 2 months that I've taken my phone into the Samsung Smart Care centre to repair the issue of my Samsung S4 continuously activating the S-View mode without the S-View cover. <br> The first few times they advised that it is software related, and I disagreed as I reinstalled the software myself and did a hard-reset, never the less they continued to ignore the customers advice.<br> I've advised them that the issue only occurs when Mobile data is enabled and the phone switches from 3G to EDGE signal. <br> <br> I've just collected the phone(for the 4th time) and queried if this use case was tested, the representative said that it was. But again I can barely use the phone as the screen continues to randomly go black.<br> <br> The phone's warranty is expiring this month and this is a terrible representation of a once flagship product. I can almost say that I will never purchase a samsung device again if this issue is not resolved.<br>