Most dangerous tools are predictable in their danger. Take firearms; modern firearms are reliable[0] and tend to do exactly what their current handler intends. You would not for example expect your firearm to leave its case in the middle of the night and blow your windows out, for example.

Smart phones are unpredictable in their danger. You would not expect Grindr to sell you out to an oppressive regime, for example. Nor would you expect your private dating profile to get you fired. These are unpredictable outcomes well outside the range of what most users would expect.

0 - Truly accidental discharges where the firearm goes off without a trigger press are rare and make the news. Most negligent discharges are the result of people mishandling the firearm, rather than the firearm doing something unexpected.