Let’s pretend for a moment that you operate a wireless phone company for a relatively small country that’s packed with mobile phones. Sure, you’ll focus on increasing data revenue, but if you’re smart, you’ll buy into growing operators in other countries, too. That’s how SingTel, the carrier whose home market has about 4.6 million people (and 5.6 million mobile phones), does it. The company added 182,000 new customers in Singapore in the second quarter of this year, lifting its total base there to 2.75 million subscribers. Meanwhile, in countries including India, Pakistan, Australia and Bangladesh, SingTel saw its customers grow by 42 percent, to a total of 70.76 million subscribers.