You cannot make a cell phone microscope. A cell phone is for talking and to text.
the easiest way to tell under a microscope is by the cell walls.
If you look under a microscope, you would see a nucleus in each cell. That will make these plants an Eukaryote.
Rubber is a great material to make sure that the cell phone cover is made out of.
You could do it with any phone but unless the phone has a plan for international calling you may end up paying a lot of money depending on how long you stay on the phone. It would be best to make sure that the phone has an international calling plan.
wi fi does for a cell phone it make you go on internet to get what you need for your cell phone.
It depends on what phone it is.
You can't hear sound in space
If you have a cell phone then they can make calls from many more places.
Cell phone can't be protected from jamming. The only thing you can do is to make the connection between cell phone and cell phone tower as strong as you can by keeping cell phone fully charged and as close to the cell tower.
You can call their cell phone company and have them bill their next bill with your credit card. The easiest way to do this would either be online or with customer service.