How to Permanently Delete Data from old iPhone
It is exciting to get a new iPhone; while, before selling your old iPhone others, you'd better ease all data on the old iPhone completely to prevent your personal information being leaked. This article will tell you how to delete data from old iPhone easily and quickly.
Using the default erase setting built in iOS, or restore factory setting to clear data from iPhone sounds great. Below are the steps for wiping everything out on your iPhone.
1. Back up your device.
2. Sign out of iCloud:
a. Tap Settings > iCloud, scroll down, and tap Sign Out. In iOS 7 or earlier, tap Delete Account.
b. Tap Sign Out again, tap Delete from My iPhone, then enter your password.
3. Go to Settings > General > Reset, then tap Erase All Content and Settings.
> This will completely erase your device, including any credit or debit cards you added for Apple Pay and any photos, contacts, music, or apps. It will also turn off iCloud, iMessage, FaceTime, Game Center, and other services.
> If you're using iOS 7 or later and have Find My iPhone turned on, your Apple ID and password will be required. After you provide your password, the device will be erased and removed from your account so that the next owner can activate it.
> Your content won't be deleted from iCloud when you erase your device.
4. Contact your carrier for guidance on transferring service to the new owner. If you aren't using a SIM-card with your device, you can contact them to get help transferring service to the new owner.
Note: Whatever you do, don't manually delete contacts, photo streams, calendars, or reminders while logged in to your iCloud account. This will also delete the content from the iCloud servers and your iCloud-connected devices (like your iPad or laptop).
If you no longer have your old iPhone?
If you didn't follow the steps above before selling or giving away your iOS device:
1. Ask the new owner to erase all content and settings as described above.
2. If you're using iCloud and Find My iPhone on the device, you can erase the device remotely and remove it from your account by signing in to icloud.com/find, selecting the device, and clicking Erase. When the device has been erased, click Remove from Account. After you erase the device, you'll need to wait 24 hours before you can activate iMessage on your new device.
3. If you're unable to complete either of the above steps, you should change your Apple ID password. Changing your password won't remove any personal information that is cached on the device, but it will make sure that the new owner can't delete your information from iCloud.
4. Deregister iMessage if you're switching to a non-Apple phone.
If you're using Apple Pay, you can also remove your credit or debit cards at iCloud.com. Just choose Settings to see which devices are using Apple Pay, then click your device and click Remove next to Apple Pay.
Before deleting all your info on old iPhone, if you wanna Contacts only restored to the new iPhone 6 or iPhone 6 Plus, and other data like Notes, Reminders, Photos and Voice Memos previously on the old iPhone extracted and kept on the computer, what can you do? As we all know, neither iTunes nor iCloud can realize so, as neither of them transfer part of the backup file. Is there any way to make it? Actually, there is.
To selectively restore data from your old iPhone, you can get help from third party software Brorsoft iRefone for Mac, which is specialized iOS data recovery software and can recover notes, messages, call history, etc data selectively. With it, you can recover your lost or deleted data from the iPhone as well as from iTunes backup file or iCloud backup which is completely up to you. What's more, the prgoram is available for both OS based Mac and Windows based PC. For Windows users, please get Brorsoft iRefone.