Before You Start; Cellphone System Structure - NEC N343i User Manual

Before You Start

Cellphone system structure

Every time you use your phone, there are several components involved for the phone to operate successfully and to process a call:
The people that
make your phone
All the features described in this user manual are supported by your phone. However, for all these features to work, you must have a valid SIM card
(supplied by your service provider) that also supports these features. If the network that transmits your calls does not support a certain feature, the
feature will not work even if you have a fully featured SIM card. This last point is especially important when you are roaming networks.
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Service provider
The people that supply
your SIM card and bills
Network
The people that
transmit your calls
i-mode provider
The people that provide
your Internet services
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