A passcode might have prevented the entire thing

from here

Do you think anyone who happens to pick up your phone should be able to use it? To text as you? To make purchases as you? Well then maybe you can learn from Liam Neeson's character and put a damn passcode on your phone, or maybe enable the biometric lock feature if there is one.

(And hopefully my Imgur account doesn't get banned for 'spoiling' a 4 year old film)