Article in todays Wall Street Journal examines the issue of germs on your cell phone together with test data. These days cell phones go everywhere and can pick up a wide variety of germs.

Come to that, I go everywhere and pickup "germs" everywhere I go, even though I forget to take my cell-phone with me most of the time.

You have to take a lot of this Science By Press Release with a huge grain of low-sodium salt......however much it comports with what you believe.

In the context of what the WSJ appears to be endorsing, I wouldn't bother with any of the above for wiping down my cell phone to protect myself from what might be hanging out in my handbag unless the screen was so nasty I couldn't read it.

Conversely, if I'd just loaned it for use by someone who appeared to have, say, TB and who'd hawked and coughed purulent phlegn all over the device, I still wouldn't use any of the above......I'd throw it in the garbage.