Will it damage the iPhone??? Or will the iPhone only draw what it requires? I don't think it's USB-c capable anyway.... I'm travelling soon and have the 29 watt charger and lightning to USB-c cable for my iPad Pro 12.9. And to save bringing multiple chargers I want to just bring the one charger. I tried it last night on the iPhone and it charged no problem and was not even hot or anything so is it safe?