Messaging app Line launched its paid-for international calling service for Android users first, but now it has quietly expanded the service_to its iOS app_and made it available in an initial 10 countries, which includes the US. Line’s calling debuted in eight countries_(on Android) last month, and now Line users with Apple devices in Columbia, Mexico, Peru, the Philippines, Spain, Thailand, Argentina, Australia, Malaysia and the US can_sign up too. The Japanese company_already provides free voice and video calls between Line users, but this service allows for calling ‘out’ to landline and mobile numbers across the world. The calling service was...

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