We need:
One egg and 2 mobiles
65 minutes to call from one phone to the other
Set up something like in the graphic

We'll initiate the call between the mobiles to last for 65 min's approximately;
Nothing will happen on the first 15 minutes...
After 25 minutes the egg starts warming up, after 45 min's;
The egg is already hot; and after 65 min's the egg is cooked

Conclusion:
If the microwave radiation emitted by the mobiles is capable to modify the proteins in the egg. Imagine what it can do with the proteins in our brains when we talk through the mobiles.