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With all the personal information you keep on ' your iOS device -- passwords, contacts, phone numbers, and documents -- you need to make sure it's secure from prying eyes and backed up in case you lose it.
Put It in The Case
If your device falls down when you leave a cab, that would be a disaster. Protect it with durable iphone 4s aluminum casefrom both sides, and no scratches, cracks will happen.
PASSCODES
You can set one of two kinds of pass-codes: numeric or alphanumeric. The first is a four-digit number code; the second can contain any number of letters, numbers, and symbols. The latter is obviously more secure, but it's also harder to type in. The passcode will be required when anyone tries to activate your device. If the correct passcode isn't supplied after ten tries, iOS blocks access to your apps and data.
To set either kind of passcode, go to Settings* Passcode Lock If it isn't already on, and you want to use the four-digit number code, just tap Turn Passcode On; if you want to use a longer alphanumeric code, turn Simple Passcode to Off and then tap Turn Passcode On. In either case, iOS prompts you to enter your passcode twice. Assuming those two entries match, your device is now protected.
Once you've set a passcode, you can specify when you want to require it (tap Require Passcode and then select a time). You can also opt to have the data on your device erased if someone enters an incorrect passcode more than ten times. If you have an iPhone 4S, you can choose whether you'd like to enable Siri from the lock screen. When enabled, Siri can perform basic functions (sending text messages and emails, tracking contacts with Find My Friends, and more). If you try to do more, Siri prompts you to first unlock your phone.
Some apps (such as Dropbox) may require passcodes of their own when you launch them, to protect the specific data in those apps.
FIND A DEVICE
If your device gets stolen or misplaced, you can track it using Find My iPhone. Apple's free service allows you to locate a device, send a message or alert to it, and even lock and remotely wipe it. To use this service, however, you first need to enable it on your device. You can do so by going to Settings* iCloud and turning on Find My iPhone. If you don't have an iCloud account, you'll need to create one first.
If your device does go missing, you can track it using the Find My iPhone app or via iCloud.com.
BACK UP
You can choose whether to back up your device's data to your computer or to iCloud. An iCloud backup is more current; with iTunes, your backups are only as recent as the last time you connected your device to your computer. To initiate an iCloud backup, head to Settings * iCloud* Storage & Backup, and turn the iCloud Backup toggle on. You can make doubly sure that your data is safe by backing up your device to both iCloud and iTunes: When you connect to iTunes, change your Backup preferences under the Summary screen to Back Up To This Computer and dick Sync; when the backup has finished, return the setting to Back Up To iCloud.
Items in Lists
In Mail, swiping sideways causes the Delete button to appear; tap it to delete a message. This action works similarly in other apps.
Find My Phone Apple's free service allows you to locate your device or even remotely lock it.
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