CHART OF THE DAY: AT&T's Network Blows

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AT&T promised to spend $2 billion upgrading its wireless network this year. Whatever it has spent on the upgrades so far isn’t helping.

A new report from ChangeWave Research (via Philip Elmer DeWitt) shows consumer dissatisfaction growing with AT&T, while it’s decreasing with Verizon. ChangeWave surveyed 4,040 smartphone owners about dropped calls over the last three months.

In the chart below, you can see dropped calls for AT&T customers growing, despite the investment to improve its wireless network.

chart of the day, dropped calls verozpn vs att, march 2010

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