Enable passcode protection!
- Enter the Settings app
- Tap General
- Tap Passcode Lock
- Tap Turn Passcode On
- You can opt for a simple password, which is 4 numeric characters, or you can choose to disable simple passcode, in which you will have to use a longer, alphanumeric passcode.
Don’t jailbreak your iPhone!
Jailbreaking circumvents the security already in place, allowing you to install unauthorized applications on your iPhone. However, this also means that you can easily get malicious software on your iPhone, which makes it easy for hackers to install remote access tools, keyloggers, etc. which will compromise all of the information on your phone.
Find My IPhone
Consider registering for Find My iPhone, which can help you locate your phone if it is lost, send a message to it, or even wipe its contents remotely if you need to:
For more information on protecting your iPhone/iPad and more step by step instructions for better security, see IOS security hardening guidelines
Reset your iPhone
Restoring your iPhone to factory settings is a very simple process, and can be done right on the phone. Make sure you have a full iTunes or iCloud backup of your device if you wish to restore your contacts, photos, settings, music, videos, apps, etc: