The picture on page 26 of the 8/15/13 WT shows three scenarios with the caption "What Scriptural principles should come to your mind under these circumstances." The scriptures are, of course, what's discussed throughout the article. "the desire of the flesh", "the desire of the eyes" and "the showy display of one's means of life". Now, the third part of the picture shows a man looking at a display of what appears to be smartphones. The idea is that Satan is very crafty, and puts this desire in us, so do we really need to go out regard a smartphone as an everyday need?
I submit that WTS has played into Satan's hand. At the Annual Meeting, I heard multiple people say, after the program ended, "well, I guess I need to go out and buy a tablet now." Who put the desire to regard these as a "need" into the hearts of JWs? It certainly wasn't the advertising world. No, it was WTS.