As of 2015, 4G calls have become a very attractive option; this technology is known as VoLTE. Does the possibility of making 4G calls already exist? What does VoLTE mean and what advantage do 4G calls have?

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

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.