I always have my phone in my front shirt pocket, together with my 'wallet' (my public transport pass which has all of my other cards/passes inside it). Phone is attached to my shirt's upper button hole with a coiled lanyard. Have had it like this for years.
1) My phone never falls.
2) I never lose my phone.
3) Nobody can steal it without having at least 1-2 seconds more. Sure, if someone grabs it from my hand and pulls strong enough it will go - but it may just give me another second, just enough time maybe...
In fact the one single time 3 years ago that while out of the house/office I disconnected my phone from my shirt, on a train in Germany, I instantly lost it. Found it again at the Lost & Found office at a railway station, but that was one scary day.
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