Many people never use modem. If you are not using it either, you do not need. And of course you do not need a modem to connect to wireless networks.
to connect the internet......
if modem has wireless capability then a router is not needed
if modem has wireless capability then a router is not needed
if your modem has wireless caplebility, then a rounter is not needed
Fix a modem? You would be better of buying or getting a new modem Depending on your needs they can be cheap or more expensive.
A modem is needed for internet and other commuinications. It is needed to connect to the isp, it sends and decode transmittions. For more information, see: http://en.wikipedia.org/wiki/Modem
"Buying a modem 3G would only be good if your work online requires it. A lot of people tend to over buy things that they do not need. This is a powerful modem, and if you do not need it, you should not buy it, as it is just a waste of money."
no, it is optional
a wireless router is needed when internet modem doesn't have wireless capability.
modem
no, a modem is slow and you would be better buying a router
No, buying a more expensive modem will not increase your connection speed. In order to get a faster connection, a person needs to have a high speed connection, such as broadband or cable. Having a defective modem or router can slow down a person's speed if they already have broadband service.