(NOTE! This is old article). Some mobile operators in different countries, e.g. T-Mobile and AT&T in USA, Telstra and Optus in Australia plan to shut down their GSM (2G) networks. Some carriers, e.g. Rogers in Canada, do not have GSM (2G) coverage in all areas of the country and use the roaming 3G networks of their partners. iSocket 3G is needed for these countries.
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