Indian e-commerce juggernaut_Flipkart_is getting busy in the mobile device market. Today, it announced that it has teamed up with phone manufacturer Karbonn to launch a series of what it calls “budget smartphones” ranging_from a mere Rs 2,699 ($45) to Rs 4,499 ($75). The smartphones are all dual-SIM and run on Android Jelly Bean or KitKat._Last week, the company stepped into the tablet space with the launch of its own Rs 9,999 ($166) seven-inch tablet, branded under Digiflip Pro. There are two 2G phones in the series — the Karbonn Smart A50S and A52+, which both have screen sizes of 3.5...

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