If my phone is at risk of running out, I just take my wall charger, find a nice cafe to sit down in and plug in my charger whilst having some lunch. I've never

If my phone is at risk of running out, I just take my wall charger, find a nice cafe to sit down in and plug in my charger whilst having some lunch. I've never had anyone complain at me about it, although I'm normally buying food and drinks so I'm not just leaching electricity.