The phone number that is used for contact for the Shopping Network uses is 800-284-3100. Basically, this phone number is used for anything that anyone wants to talk to the network about.
An unlocked phone is when a phone isn't forced to be used with a certain network. It is available to be used with certain networks that accept these types of phones.
Currently the Samsung Gravity Smart phone can only be used with T-Mobile service. The Gravity works on the GSM network. Verizon operates on the CDMA network.
An unlocker allows your phone to be used on any network rather than being locked to one particular network. When you buy your phone it will be locked to the network you took the contract out with but if you wish to change network you will need to pay an unlocker to make your phone work with your new network. An unlocked phone also has a greater second hand value as it appeals to more people.
If the handset is 'unlocked' - it can be used on any network. If it's currently locked to a specific network other than Verizon - you'll have to contact your current operator to get the phone unlocked.
DSN is the Defense Subscriber Network. It is a closed telecommunications network used by the US military. A commercial phone number is number used by POTS (Plain Old Telephone System).
A data network is a network that is offered by a telecommunications company for the use of transmitting data services to the general public. These services can be used for transmitting data via a phone etc.
A commander phone is used in office settings and in call centers. Used properly it becomes a central hub to all of your communication needs, allowing you to network before phone lines and computers as needed.
Any phone can be used as a 'pre-pay' phone - so long as the network the phone is on offers that facility - most of them do ! Whether a phone is paid for by a monthly contract - or a pay-and-go - is determined by the network operator - not the phone !
The HTC EVO 4G can is only available for the Sprint Network. So because you have the Verizon network you cannot use this phone. But as an alternative you may switch to a large variety of Android phones instead.
A phone tree is typically used for spreading information to a large network of people. Typically it is used at schools or by parents to inform of event cancellation, or for emergency use.
The first cell phone in India was supposedly used in 1995. It was used in Kolkata via a mobile network from the Australian phone company Telstra known as MobileNet GSM.