How a cell phone or smartphone works

It is based upon identifiers and GPS Satellites and Cell phone towers. The little chip your provider puts in your phone identifies your phone as that specific phone number identifier. Then your phone has a GPS location even if it is in a car or plane and moving if it is turned on. So, you can be located through the GPS location of your phone (sort of like having a chip in the back of your neck like soldiers do) anywhere you are on earth.

So, when you want to make a call your phone basically says to the nearest microwave tower, "I'm this phone number at this GPS location and I want to talk to this other phone number at whatever location it is on earth."

So, all the microwave towers in the U.S. 50 states try to locate that other phone you want to call. IF they find it they will ring it and if that person answers then you get to talk to them.

So, it is about locators and identifiers and GPS locations and if you are moving in a car sometimes you change microwave towers and sometimes your call will drop between towers or where the reception isn''t good.

This is basically without going into all the technical details how all cell phones and smart phones work on earth.

Wifi calls that often are free to other countries often go direct through the wifi through wires or signals overseas over whatever Internet paths they take as well. What's app is mostly done through WIFI and internet connections by the way to other countries on earth as well as within the U.S.

However, if you have free unlimited Data on your smartphone like I do then often if you are in a city or suburbia you can use your What's App to call anywhere on earth or to text or to send pictures anywhere too. (Anywhere that What's App is allowed to go on earth that is).