Here is how it goes: Anytime you use one of those services (either it is a web page, mail or anything other), your mobile has to download it's content to show it to you. It is exactly like downloading a file to your computer. Anything counts as extra content to be downloaded: the pictures, the scripts some pages use, the attachments of the emails and all of this stuff.
However, unlike internet providers do, the mobile companies charge the use of the internet according to the content downloaded rather on the time spent surfing.
In this case, if the mail you have been receiving includes many attachements, will cost you more. If you view pictures on facebook, will cost you more. If you use twitter much, will cost you more.
Hope you find these information useful...
Twitter, facebook are both web based social networking web sites. If you accessing them from a phone you pay for the amount information downloaded to the phone according to the service contract with Verizon.
yes definitely all surfing the web what ever it may be, is counted as downloading so will be charged so when browse use mobile version which are less heavy. example
Whenever you flash a phone to metropcs you can only use it for Text and Talk, none of the other features wil work unless you have WiFi enable then you can use that. but not the carrier's web service
It's dependent on which Facebook app it is, but for the most part you don't really have a way around it beyond providing false information on your phone number. The entire reason that these groups put out these apps is to get your information - so they don't want to provide the information unless you give them the phone number or address so that you can be placed on some sort of a list they'll market with.