More and more phones are suitable for calling over 4G. But what are the advantages, how does it work and how do I know if I can already make calls via 4G? Read all about 4G calls here

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How does a GSM repeater work? Why do I need an outdoor antenna and an indoor antenna? Where do I mount the antennas and the splitter? In this article, you will learn how GSM repeaters are being installed.