You use your iPhone like a computer, but you may not think to protect it like one. Your iPhone is vulnerable to hacking, just like a computer. This puts at risk any information stored in your phone, including your contact lists, emails, text messages, passwords, and more. You can take steps to keep your iPhone, and your information, secure from hackers.
Locking your iPhone with a passcode does more than prevent someone from picking up your phone and looking through it. It also prevents your iPhone from being hacked from afar. When you use a passcode to lock your iPhone, data protection is enabled. Through this security feature, all information stored on your iPhone is encrypted when it is locked. This encryption will also apply to some applications, but not all. Lock your iPhone through the "General" screen on the "Settings" application.
Wi-Fi and Bluetooth
When you are not using your Wi-Fi, turn it off through the "Settings" application. Leaving Wi-Fi on makes your iPhone vulnerable to potential hackers. When not connected to Wi-Fi, you will still have access to the 3G network, so you'll still receive notifications and push email. Bluetooth devices should also be turned off when not in use, since they also leave your iPhone vulnerable.
Don't allow your iPhone to remember passwords from wireless networks. If you do, this makes it possible for hackers to imitate trusted networks and gain access to your iPhone. Instead, manually enter the password for each network you join, each time you join it. It will take a little extra time, but the added steps will help ensure that you are using a secure network.
Be careful where you click. Much like on a computer, clicking a link to a website set up to hack your iPhone will let a hacker do just that. Never click a link in an email or a link on a website you aren't familiar with. Instead of clicking links, type the name of the website you wish to visit directly into the address bar on your browser.
Keep your iPhone up to date. When Apple and iTunes release new updates, many of those include new or improved security features. Check for updates often, and install them onto your iPhone as soon as they become available.