Every time you use your phone, there are several components involved for the phone to operate successfullyand to process a call: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 networkthat transmits your calls does not support a certain feature, the feature will not work even if you have a fullyfeatured SIM card. This last point is especially important when you are roaming networks.Before You StartCellphone system structureThe people thatmake your phoneService provider Network WAP service providerThe people that supplyyour SIM card and billsThe people thattransmit your callsThe people that provideyour Internet servicesUser Guide LegendsThis type of paragraphcontains details of where tofind related information to thetopic being explained.This type of paragraphcontains information worthnoting.This type of paragraphcontains importantinformation.
