I have the Inspiron 13 7000 series 2-in-1 for almost a year and i also have the ghost touch issue. I called dell for the issue and they tried to see me 300 dollar software and hardware warranty. The tech i was talking to was trying very hard to convince me to get the warranty that she went to a point where it sounded like dell makes a very bad laptop and buying extended warranty is a must hahahah. I said i still have some time before my 1 yr factory warranty expire. I like the features in this laptop I'll use it as much as i can and move to buying mac after this. Not coming back to dell again after this.
I personally feel that this product is a factory defect and should have a recall for the product. Dell should also acknowledge the issue and fix through recall rather than trying to see warranty for the issue.