Warning by CNET: iPhone "Restore" does not delete personal data!
If you restore factory setting for your iPhone,it does’t mean “Erase” all iPhone data permanently,because some recovery software can restore them easily,you need to use a third-part eraser tool to wipe iPhone data.

You may think that simple deletion or restore factory setting can erase the text messages easily. Yes, press the delete button or restore your iPhone to the factory default settings can delete text messages, as well as other files from your iPhone. However, the two options can only make data invisible, but not really erase them. Other people uses a data recovery tool to recover these deleted files easily.

Why we need erase iPhone data before selling?
When you are going to resell your old iOS device, don't leave your personal information vulnerable to identify thieves,it is really necessary to delete text messages on iPhone permanently. And you will never know who will get your old iPhone and what he will do with your old iPhone. Then, how to erase the SMS messages from iPhone forever? Since simple deletion and restoring are not helpful, you have to turn to third-party software for help. Here in this article, we will show you how to permanently erase everything on iPhone

Permanently to delete messages from iPhone before selling

Step 1. Run the Program and Connect iPhone to PC

Step 2. Choose Files You Want to Erase and Wipe Mode

Step 3: Start to Delete Text Messages from Your iPhone
Finally, you can choose the option of erase all data and settings to delete all text messages, including SMS attachments from your iPhone 5S/5C/4S/3GS.
Done! You have successfully got your iPhone to a clean slate. Want to delete iPhone files permanently to protect your personal information from revealing? iPhone Data Eraser is your good assistant.

Tips: You must to backup iPhone data to computer with a iPhone transfer program,before you want to erase iPhone data with the help of this ios data eraser,because once you erase data on iPhone permanently,you can’t get them back.

Read more: Erase contacts on iPhone before selling

How to permanently Erase iPhone Data Before Selling

If you want to delete all of your iPhone data, the common method you may want to try is to go to Settings > General > Reset > Erase All Content and Settings on your iPhone. Well, it's a common way which helps you erase iPhone data without restore, If you want to protect your information away from leaking to strangers, my recommendation is the iPhone iPad Data Eraser, which can delete text messages on iPhone completely.

When you want to sell or give away your iPhone 5S for the coming iPhone 6, you must remove all your personal information on it. Here is a video about permanently erasing deleted files, clearing browsing history, caches and then you can protect personal data on iPhone 5S.

> Permanently Wipe All Data and Settings from iPhone, iPad & iPod
> Erase Deleted Files: Pictures, Videos, Calls, SMS. Making Them Unrecoverable
> Free Up Valuable Space By Cleaning iDevice of Invalid Files, Cache files & More
how to delete iPhone data before selling
how to delete photos from iPhone
how to delete messages on iPhone

As I know, there are some iPhone data eraser software can probably erase data permanently, which can erase the iPhone data permanently without restoring by other data recovery software, nothing can be recoverable.
You can get more details at this tutorial: How to Delete data on iPhone Permanently
How to erase sms on iPhone permanently

To erase all junk files on iPhone,you can use a professional iPhone data eraser software.It can help you delete everything from iPhone permanently without restore.
If you want to clean junk files from iPhone, you can try on a tool like iPhone data eraser software,it can help you to clear junk files without jailbreak.
Here is a guide: how to delete all files on iPhone before selling
you can refer to.

iPhone Data Eraser is the best iPhone data eraser to get your iDevice started with a clean slate before your resell, donate or trade it in. Please download and install it on your computer, and let’s check how it works in steps below.

Read more:

How to Delete iPhone Data Before Selling

How to Delete All Contacts on iPhone

How to Delete Messages on iPhone

Permanently Delete Iphone Text Messages Before Selling

How to erase iPhone text messages before selling? You can select them all and deleted them just one-click. However, if you need to recover deleted iPhone text message, contacts because you change your mind, you can use Any iPhone Data Recovery.

Read more: How to Delete iPhone Data before Selling

iPhone Messages Eraser helps to permanent delete iMessages, messages, contacts, on iPhone 6/6s/Plus/5/5S without restored.

Permanent delete WhatsApp messages on iPhone/6s/Plus/5/5S
Permanent delete SMS from iPhone 6/6s/Plus/5/5S