Summary: It is necessary to permanently erase data (contacts) off old iPhone 3GS/4/4s/5s/5/6 before selling,simple deletion or reset iPhone to factory settings can’t delete data permanently, some data recovery can recover them back easily.To permanently erase all contacts from iPhone before selling, as well as text messages, videos, photos, WhatsApp chats, notes, you must to use a third-party iOS Data Eraser tool to wipe iPhone files permanently.
With the release of much-anticipated iPhone 6s, you may consider selling your old iPhone in order to a new iPhone 6s. What concerns you most about selling or or trade-in your old iPhone? Get a better price only? No, the most important focus should be how to protect your personal information especially the contacts you saved in the old device. I am surprised that most people just simply delete data or restore the old device to factory settings. But are these data erasing methods enough? Surely no!We must to permanently erase already deleted and existing contacts from iPhone before selling it. Deleting or restoring just makes the data invisible and unaccessible, a simple iPhone data recovery program,like Dr.Fone iOS Data Recovery can easily get all deleted files back easily.
Important: You will never know who will get your old iPhone and what he will do with your private data you used to saved on the phone after you selling the old iPhone.
To permanently erase private contacts data on iPhone, the most reliable way is using third-party iPhone Contacts Eraser software like iPhone Data Eraser, which is specially designed for iPhone users to wipe all data thoroughly, including contacts,emails, account info, passwords, text messages, photos, videos, and more from iPhone, iPad with zero recovering possibility. It also write in your iPhone with random data to sweep the data erasing trace. It works well for iPhone 7/6S/6/5S/5/4S/4/3GS, iPad Pro/Air/Mini, iPod Touch. After erasing with this tool, there is no any data recovery software can recover those erased data back.
Step 1. Run the program and connect your iPhone
After the installation, run iPhone Data Eraser on your computer. Then get your iOS device connected with a USB cable to the computer. When the program recognizes your device, you’ll see its main window as follows.
Step 2. Choose a type of data erasing
From the main window, you can see some information about your device on the left side. On the right side, there are two kinds of data erasing ways:
Erase all data on device: Erase all data and settings permanently.
Erase deleted files: Only erase deleted contacts,pictures, videos, call logs or messages, making them unrecoverable.
Please choose the first type (the other type is not available yet).
Step 3. Start to erase the contacts data on your device now
There are three security levels to erase all data on your device:
Low: Overwrite all of your data with zeros to ensure that the files are not recoverable.
Medium: Overwrite your device with junk files to ensure that the files are not recoverable, and no one knows that you’ve erased your device. .
High: Erase and overwrite your device three times, and the security standard is based on the U.S. DOD 5220.22-M, more secure for confidential data destruction on your device.
You can choose anyone of them according to your requirement. Higher levels will ask for more time. Here, let’s choose the medium one. Then click on the Start button. To make sure that you’ve backed up your important data and still want to move forward, you need to type a word shown you in the input box and click Confirm. Now, the program begins erasing all data on your device as shown below.
Note: Please don’t disconnect your device during the process. Or data on your device will not be completely erased.
Step 4. Use your device as a new one
At last, you can get a total “clean slate” iPhone with no data on it at all. No any data recovery tool can recover them from your iPhone. Now, you can put your old iPhone to eBay for resale safely.
The iOS Data Eraser supports up to 28 types of file, such as contacts,Safari Bookmarks, photos and so forth. Sincerely hope that it can help you with this kind of difficulty.The powerful iPhone Data Eraser can wipe the all data on your iPhone before selling,including contacts,emails, account info, passwords, text messages, photos, videos, etc.It’s a magic iPhone eraser in the whole world!You can just try to download it and you must feel amazing after using it!
Firstly, you should save data before erasing them and selling them. Important data on your iPhone will be automatically saved by iCloud. Meanwhile, you also can backup data through manual methods. There are two methods for you to erase the data on the iPhone.
1) Backup iPhone by iCloud
The first method is backing up data by iCloud. You should make sure there is real connection between your iPhone and Wi-Fi, and then open the setting option to navigate to storage and backup. In this way, according the time you backup iCloud, you can immediately backup data on your iPhone. It should be noted that a few minutes would be spent in the last step.
2) Backup iPhone by iTunes
The second method is backing up data by iTunes. Firstly, you need to connect your iPhone with computer, and then open iTunes option and navigate it to “device” on the left panel. At last, you only need to choose “backup” by right clicking. Through this method, what should be noted is that if you have bought items on iPhone, but you forget to transfer them to the computer, it is a little trouble for you. However, don’t worry!There is always some methods for you to save it. You can choose “transferring purchasing items” by right clicking. Then you could backup the purchasing contents to computer.
3) Backup iPhone Files to computer with third-part iOS Data Transfer Tool
iPhone Data Transfer is a professional data transfer and managment software for iPhone iPad and iPod user to transfer data between iDevice and PC/iTunes, directly transfer data between iDevices, and import/export/edit/delete your iPhone data from on your computer. Therefore, you can backup your iPhone data to PC with ease.You can backup text messags, contacts, photos, videos,ect from iPhone to computer directly.
Read this use guide about how to back up your iPhone to computer directly