Using Voice over Internet Protocol (VoIP) calling applications on your mobile phone can save you money if you make a lot of international calls or travel out of the country often. iPhone users have several options when deciding what app to download.
Band X
Founded in 1997, Band-X is a privately-owned company, headquartered in London, with investors including Madison Dearborn and Morgan Stanley Venture Partners.. Band-X provides the telecoms industry with a range of specialist voice services delivering great
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