Sprint says the upgrade will also improve voice service, which runs over the CDMA network. Sprint notes that it began running its CDMA voice service on a new spectrum band (800MHz) in the first quarter of 2013, which it believes will improve in-building coverage and reduce dropped and blocked calls.
Despite our test results, Sprint says that the network overhaul is already having positive effects on its 3G service. In Chicago, for example, where the overhaul is nearly complete, Sprint says that its 3G sites are handling about 30 percent more traffic on average, and that download speeds have increased by about 15 percent for sites with upgraded backhaul.
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