Nope you acn use it online at www.twitter.com
You can use any mobile device.
Yes if you set up the texting service.
The website Twitter does not charge anything for you to use Twitter from your cell phone. However, your cell phone provider may. You could get charged for sending or receiving text messages, or using the web from your phone.
not a basic cell phone. it can be used on cell phone that were specifically made for email and facebook and twitter, phones that can handles alot of typing and a phone that can load fast.
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no
Cell phone can lose internet service in certain locations. If you are not in a secluded location and you service is still not working you should contact AT&T to repair the issue.
Not really. Sometimes yes because you might buy a cell phone with certain features which require a fast network. If you are under a contract with certain company that has bad service it might make your cell phone experience a bad one.
You can use your mobile internet to access Twitter.
your cell phone service
You can only do it by computer
Cell phone network extenders can be a wonderful way to improve your cell phone service. They are easy to install and are an affordable option if you do not wish to change your service provider.
You do not need to have home phone service if you have a cell phone. However, a home phone is a good back up to have in case your cell phone stops working.