I want to remove all data on my iPhone as I just got a new one and plan to sell the old one. The problem is that every time i tap 'erase all content and settings', it was stuck on a gray screen. After reboot, nothing was deleted.
What is going on here?
I personally sued safewiper for iOS to wipe my iphone 6 plus before I selling on ebay, it works but not free, the trail version allowed me to wipe 50 files, so I purchased and use the full version to wipe my iPhone.
So, if you need the code of safewier for iOS, please give me your email, I can send to you for free.
you can download it here.