The Unstructured Supplementary Service Data (USSD) code (which we won't reproduce here) apparently only works on Samsung phones running Touchwiz, and only if you are directed to the dodgy destination while inside the stock browser (rather than Chrome, for example).

ENGADGET: 'Dirty USSD' code could automatically wipe your Samsung TouchWiz device (updated)

One man who lives in Clapham, south London, and is HIV positive said he relied on the postal service to deliver supplementary medicine that helps fight the side effects of his treatment.

BBC: NEWS | UK | Post walkout causes huge disruption