To switch off call screening, open the Settings app and head to Apps > Phone. Scroll down to the Screen Unknown Callers ...

You can fix this though! All you need to do it press your lock screen, then tap customise. You should then see a little ...

If one were assembling a list of tech products that radically altered the way the modern world works, it's safe to assume that Apple's iPhone would be at, or at least near the top of the list. After ...