Here's a good way to make your iPhone safer
For those who use a Passcode to their own device, or just want to have safer password, there is a good way that you can ensure that your passwords are difficult to guess or be broken. All involve removing normal letters and diacritics used in your passwords. iOS keyboard can also allow you to use characters and hackers will need more time to crack or guess a password if it contains accented letters instead of normal letters, or along with them.
To use a complex password with the passcode you have to go to Settings -> General -> Passcode Lock and turn off Simple Passcode option, but will have to get used to the idea that you will unlock harder your terminals, entering a more complex password. One of only 4 digit passcode is usually good enough to protect against unknown people that have your device in their hands, but a hacker can unlock it without much effort. Stay tuned for more detailed tips and tricks.