Hey friends, today I will show you, how you can make your screen full size or change the background of the caller screen while calling someone or when someone calls you.

This process does not need any rooting, so anyone with an Android device can easily use this simple feature. I have made a Complete guide video in Hindi, in which I have a guide you step by step that how you can apply or use this feature.

                            Here is Complete Guide Video

 Download  Photo Caller Screen App