What is quad band gsm

It also means users can transmit and receive data while "roaming," or traveling outside the coverage area of their mobile service providers. Quad band GPRS devices typically are more expensive than single band, dual band or tri band mobile devices. For users who travel primarily to one or two specific locations, such as on business, a dual band device that covers two of the four GSM frequencies or a tri band device that covers three of the four GSM frequencies usually is sufficient.

For users who rarely travel outside the coverage areas of their mobile service providers, any multi band mobile device is an unnecessary expenditure. In addition to the quad band GPRS device, the user's mobile service provider must make GPRS service available in the different countries in which the customer is using the device.

If not, then the mobile service provider must have cooperative arrangements in place with mobile service providers in different countries.

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