It used to be trends started in the US and then moved to Israel. With chumras it is just the opposite, they start in Israel and migrate to America.
What is interesting here is the inherent contradiction in the way these phones are being marketed. On one hand the phone is just for talking. On the other hand the article (and the ads here in Israel) emphasize that these are sophisticated, elegantly designed devices with color screens etc. If the phone is just for talking why do you need a sophisticated device with a color screen?