I'm wondering what is the best way to get out of a situation if someone pulls a knife on you, sitting behind. While I wouldn't be too happy handing over my earnings(although most of work is account), I really don't want to be handing over my €500 phone.
why would you work with a phone worth 500 euro? you may as well have 500 euro in cash sitting on your dash. my phone cost me 80 euro about 2 years ago, its a smart phone, and i use it while working for loads of things but it is worthless to some scum bag who might be thinking about robbing me, they wouldn't bother robbing it.
you are only asking for trouble using an expensive phone while working as a taxi driver.