I have a white app icon titled "Untitled". When I click on it, it opens a Safari window with Untitled title window. After deleting it, if I restart the iPhone, it gets created again.
Is there a way to delete it permanently?
The procedure will require for you to SSH into your device.
Navigate to "private/var/mobile/library/webclips" and delete any clips (folders) entries.
By deleting these entries, it will eradicate the untitled icons appearing on your springboard.