Block cookies and trackers
By now you're probably aware of computer cookies which track your every move on the Internet.
To block off this access in Safari, select Block Cookies in Safari's settings and choose between "Always", "From third parties and advertisers" and "Never".
Should you want to block off tracking too, you'll need to open Settings, choose Safari and toggle to Do Not Track. This essentially means that websites will not record your website browsing activities.
Save confidential data in secure apps
The privacy threat is two-fold on iOS, with your data at risk from cyber hackers and even government agencies like GCHQ and NSA.
One step would be to download secure applications, like 1Password for storing your passwords, or Personal – essentially a digital vault for storing encrypted files and photos (with 256-bit AES and 2048-bit RSA encryption). Catchr is also useful if you want to see how people have used your iPhone after you've left it unattended.
Check location-based apps
Your iPhone or iPad is silently tracking where you've been and that's thanks to built-in GPS. A number of apps take advantage of this – an Appthority report last year revealed that 60% of iOS apps gathered location data, compared to 42% of Android apps. McAfee Labs claims that 80 percent of all apps collect location data.
You can deselect the apps that keep track of your location by going into Settings, Privacy and then Location. From there, you'll be able to toggle unwanted apps to 'off'.
To drilldown further, there's the option to deselect location services entirely, while you should note the option for 'Systems Services'. This is stuck on that end of 'Settings' but gives you the opportunity to tell Apple not to serve location-based iAds or to collect data in your 'frequent locations'.
Block app access to Bluetooth, Facebook and Twitter
An increasing number of mobile applications demand certain rights when you first download them, from accessing your SMS messages to viewing your contacts book.
This might be fine at the time but you can choose how apps share data. For example, you could decide to block the apps that share files to Bluetooth, or those that want to get information from Facebook and Twitter.
Employ two-factor authentication
Two-factor authentication adds another security layer to apps which may well hold sensitive information.
It is a relatively new phenomenon but some popular apps – notably Google and Evernote – are already taking advantage. This basically entails signing in with a password, and then confirming your log-in with a passcode sent via SMS.
Limit ad tracking
Advertisers serve ads to iOS users by tracking Unique Device Identifiers (UDIDs) or, more recently, by using Apple's Advertising Identifier feature (IDFA).
If you're uncomfortable with the amount of data you're sharing, you can turn it off with Limit Ad Tracking on Settings. You'll get less targeted ads, but advertisers will know less about you.
Step back from auto-fill
AutoFill is a useful time-saver on desktop, and now iOS, but it populates oft-repeated fields with your personal data. Should you want to turn this off, you should launch Settings, tap Safari and then AutoFill and then Clear All. You can then toggle the buttons next to Use Contact Info, Names and Passwords to off.