The blurry, transparent background in Notification Center, Control Center, Spotlight and other more options menus on iOS 7 device can make reading experience rather unpleasant.
To ensure the authenticity of a document you have to sign the document with the certificate. I will show you how you can easily sign PDF document with the help of simple tool DigiSigner.
We will install VLC player, which is one of the most versatile players. The biggest advantage of the VLC player is that it does not need any additional codecs.