my old iphones hotspot was turned on ( I have no idea why or how I was on holidays at the time) and someone then commenced to use my connection and run up $600+ in data charges. This phone has never been used previously as a data phone only ever calls and texts ( its like an emergency contact phone only) is there a way to track or uncover who it was that accessed it ( I suspect it was next door) and can the phone be hacked so people can remotely turn such features on as I turned the hotspot connection off and then the next day it was on again... ***!!!
Someone from outside cannot access that setting. Do you have data turned off? This would be the fastest and easiest way to prevent it, however the only way to have hotspot active is if the carrier supports it. However, that could change if the phone has been jailbroken.