Correção de texto: Cell phones

one of the things that changed the world was cell phone, the technology is each time more advanced , many things change and they invent many things, the cell phone is a example. There are several cell phone models and change each year. Many people can’t live without cell phone, it very important for us.
The cell phone is useful for calls, text message and use internet. Everywhere there are people using cell phone, hardly we know people don’t have cellphone, but I think that cell phone became an addiction and it’s not good.