[Danny_Ocean]

Counter-point:

From the web:

It's fake. All of those videos are fake. He keeps the screen on the keypad so you can't see that he's just sent himself a sms. When your phone receives a call or sms it boosts it's signal up. You can hear the interference from the sms. Why else did he take so long to focus onto the screen. He was looking himself then when he saw the single boost re focused the camera

Honestly think of it this way, if it was as simple as adding a special sticker to the back of your phone apple would of done it already.