There are still some incidents that happen from time to time. In Geneva I've heard of someone going out for a smoke from a hotel accros from the main train station, and getting everything robbed; I've also heard of someone being beat up to the point of loosing an eye in Nyon (a town near Geneva). We also had the famous case of a guy who picked up hitchhikers, assaulted them before killing and abducting their bodies. Did so 11 times before he got caught [0].
Sure, there are isolated anecdotes like the ones you quote - but there is not a single area of either Geneva or Nyon where I wouldn't walk around with an iPhone at night (I grew up in the Nyon region, then moved to Geneva's as a teenager FWIW). The worst that you can expect is someone trying to sell you drugs, or begging, or getting into a drunken argument (like basically anywhere in the world where humans live)
Not to mention, that's probably the "worst" region of the country - I live in Bern now and you'd be hard pressed to find someone who would not bring your iPhone back to you should you leave it on the sidewalk at night.
