Similarly one may ask, what will happen if you put your phone in the microwave?
So long as the microwave is off, nothing, though signal strength will be poor. Turn on the microwave, and the phone will be dead within a couple seconds and probably on fire in half a minute or so. Put a phone in there and the barrier will work just as well to prevent any signals getting in or out.
Similarly, what happens if you microwave a penny? When you microwave money, the electrons will strike the metal thread, pick up speed, and look for a place to land. The next softest material is the currency paper around the security thread. The increase in friction on the currency paper will cause the paper to burn.
Similarly one may ask, can a microwaved phone Be Fixed?
Nope. You've probably fried the most important part of the phone, the processor. The processor contains billions of individual transistors packed into a small chip. With so many tiny Electronics components in such a small area, they'll be especially prone to energy spikes; like from a microwave.
What happens if you microwave a fire?
If you have a fire in the microwave oven, turn off the oven immediately and unplug the power cord if safe to do so. Do not open the door of the microwave, simply wait till the fire suffocates, never open the door until you are absolutely sure the fire is out. Dial Triple Zero (000) and ask for Fire.