With At&t Service When Roaming Is Data Always Available When Phone Works

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AT&T Wireless Knowledge Base Results

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Answer Center | AT&T
... (no connection to data services) X The BlackBerry device cannot connect to the wireless network NOTE: All service related functions will not work. A is required The following functions are available: Send and receive...: Determine if that carrier supports data roaming with AT&T Manually select a carrier that comes along ...
Answer Center | AT&T
... standby times depend on network configuration International voice and GPRS data roaming are available on international GSM/GPRS networks where AT&T has established roaming agreements. International network utilize different frequencies and not all phones contain all frequencies. The list of available countries/carriers is designed to work on the following networks: 850/900/1800/1900 MHz...
Answer Center | AT&T
...data roaming are available on the following networks: GSM/GPRS/EDGE - 1900/1800/900/850 MHz UMTS/HSDPA - 2100/1900/850 MHz International roaming...the phone and the international networks. USB 256MB flash (for international roaming equipment requirements, pricing, and available services.... to work on international GSM/GPRS/EDGE/UMTS/HSDPA networks where AT&T has established roaming agreements...