Looking into anyone’s personal objects is disrespectful and dishonest in many ways. However, there would be certain circumstances or scenarios where it could be considered accepted or even necessary.
Imagine the case that you are walking on the street searching for some music to hear in you smartphone while you walk, and all of a sudden you faint and lose consciousness, you are lying on the ground and a stranger picks up your phone to call an ambulance and he does, but at some point he thinks it would be a good idea to call your parents, or a relative to inform them about your accident so he starts searching thru you contacts and social media, etc. For me this would seem correct, because you might have a more complex condition and that information might be vital for the stranger to help you, and the best way to obtain it is to know who you are. Other than this, I find it incorrect to let others look into your private and most personal life, and it is not a matter of hiding something, it is a matter of respect and you rights to have your own secrets.
