RadioShack today said it plans to close as many as 200 more stores as its turn-around efforts stall. In March, the company announced it would close 1,100 stores by the end of the year. The closures combined will leave RadioShack with about 3,800 stores operating in the U.S. The company blamed its woes on poor sales of smartphones. RadioShack is in the process of updating both its image and its sales strategy with a focus on electronic entertainment devices. It sells devices from AT&T, Sprint, and Verizon Wireless.


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