Should the word telephone be capitalized?

No, the word "telephone" is not typically capitalized unless it is part of a proper noun or used as the first word of a sentence.

Here are some examples:

Not capitalized:

* I need to use the telephone.

* She bought a new telephone.

* The telephone is ringing.

Capitalized:

* I work for AT&T Telephone company.

* Telephone is a great invention.

Let me know if you have any other questions!