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BARCELONA, Spain — Cash-strapped carriers moving to 4G mobile networks need to toe the line and avoid the big problem of the 3G era: unlimited data plans. That was the exortation from Sok Koong Chua, CEO of Singtel, a carrier that offers mobile networks in Singapore, Australia, and several other countries. “We need to be more discliplined. 4G is bringing …

If at first you don’t succeed, change the operating system. That’s essentially what Samsung has done after the disappointing launch of its first smartwatch last year. This week in Barcelona, Spain during the Mobile World Congress trade show the company unveiled the updated Gear 2 and Gear 2 Neo, which will be using Samsung’s homegrown Tizen software rather than the …