How to protect data on an iPhone?

I'm trying to keep my information protected on my iPhone 6. I don't really trust the built-in security measures of iPhone, thus, looking for an app.

Give your data a shield

When you say PROTECT your data, what do you mean?
From hackers?
From someone you hand your phone to to make a call?
From some random person that might pick up your phone?

  • Why does an iphone bumper case not protect the back? Main point of a case is to protect the back, how can you do that with a bumper case of it only protects the side…
  • What to do to protect my Wi-Fi from iphone users? Okay… This is the thing… Recently I gave my Wi-Fi password to my friend and he used to from his iphone… What can I do so that my friend won't get access to Wi-Fi the next time he comes to my place. What I want to know is there anyway so that the iphone or any other device won't get access to my Wi-Fi again.
  • What is a good case to protect my iPhone 4s? I just got the iPhone 4s and I want a good case to protect it. I do NOT want an otterbox, I know those cases will protect my phone very well but I just think they are so ugly and too bulky. I want a cute case that is not too bulky. I would like to be able to put the phone in my pocket at times and I'm a girl so my pants pockets have very limited space. If you could put links that will lead me to the cases that would be awesome!
  • What iphone 4 case can protect your phone from breaking when you drop it? Soon me and my brother are going to get iphone's and i want to know which iphone case is better otter or speck if you have any other iphone cases that can protect it please let me know.