they got erased if you make more and more calls then your old call get erased.
Alexander Grahm Bell invented the telephone; The apple company invented the most popular telephones of today.
These days, most cell phones have functionalities that are very complicated to use as they are also packed with a lot of modern features. But there are still cell phones with simple functionalities...
they could use their cell phones to cheat on a test
cell phone help us today by communicating with people everywhere,and if you have a problem you could quickly take your phone and call the cops