In USA, we use the digital network specified as GSM 900 (Global Systems for Mobile communications). The digital standard, including CDMA, TDMA and GSM platforms, allows for more callers to use cell phones at the same time, occupy space on each of a service provider's cells, making it the superior choice for highly populated or metropolitan areas. Disadvantages to digital systems are their lack of unified technology and a small, metropolitan-focused calling area.
SERVICE AREA
Ask yourself. Do you want your cell phone for emergency use? Will you be using your HiPhone around town? Travel a lot? Planning a coast-to-coast?
Whether local, National or International you'll want to choose a calling plan from china wholesale that encompasses the physical boundaries of your calling needs. While using your TV Function Cell Phone on an occasional trip away from home may add extra roaming or long-distance fees to your bill. National plans, are more expensive than local plans, but will give you the freedom to call regardless of your geographical location.
SIM CARDS-the key to mobile communications
Two SIM cards in a Dual SIM Card Cell Phone contains integrated chips that extend its intelligence and capabilities by leaps and bounds. Apart from being able to store your entire phone directory, this smart card provides access to a whole range of applications such as short message service, mobile banking, and even the mobile Internet. Your phone becomes personalised and user-friendly.
The big advantage from a user's point of view is the great flexibility of SIM cards. When traveling, you don't need to carry your Camera Cell Phone with two cards, just take the cards. Rent a phone from the airport once you arrive, slip the card in the phone and you are again connected to the world, with the same phone number.
Each card has an authentication code, a password or a PIN, specific to your service provider, which ensures that only you are using the card. GSM's encryption technology is fairly advanced and is considered to be one of the most secure technologies in mobile communications.
Caller Line Identification Restriction (CLIR):
This feature enables you to restrict your cellular number from being displayed on the receiver's Multi Function Cell Phones. It helps you maintain complete confidentiality of your number. The service can be obtained at an additional cost of about Rs.75/- per month in Mumbai.
Call Waiting / Call Hold:
This feature allows you to receive another call when you are already answering or making a call. You get a beep indicating an incoming call. Using the 'SEND' button you can receive the call by placing the first caller on hold. You can switch between these two calls using the same button. You will be charged airtime for both the calls. The service can be obtained at an additional cost of about Rs.75/- per month in Mumbai.
Call Barring:
This feature allows you to bar incoming and outgoing calls using a four-digit password selected by you. This is a security measure to prevent the possible misuse of your Touch Screen Cell Phone. This feature will work only if the Call Divert feature is de-activated. You can selectively bar all incoming calls or all outgoing calls as well as outgoing ISD calls. You cannot selectively bar outgoing STD calls. The service can be obtained at an additional cost of about Rs.75/- per month in Mumbai.
Short Messaging Services (SMS):
The Short Messaging Service allows you to keep in touch with your colleagues, associates, clients who are customers & currently are outside the coverage area at the time of your calling them. Standard messages created by you can be stored in your handset and sent as required. Just pay a Re. 1 for local sms, Rs. 2 for National sms and Rs. 5 for International sms in Mumbai under a post paid plan.
Detailed billing:
A detailed statement of your calls from your Blackberry Phone, the call duration and the applicable charges can be sought. This is the most comprehensive billing statement for a person who values both time and money. The service can be obtained at an additional cost of about Rs.75/- per month in Mumbai.
WAP:
The latest innovation in Wifi Cell Phone, it enables the user to browse the Internet on his handset screens , however, handsets which are WAP unabled are required for using this service.
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