Arthur C Clarke predicted the use of ge0-stationary satelites for communications and TV back in 1945.
In 2001: A Space Odyssey (1968), he also wrote of a device remarkably similar to an iPad which was used for viewing electronic versions of newspapers etc from all around the world.
H G Wells predicted armoured warfare in 1903 when he wrote Land of the Ironclads. The very first tanks weren't built until 1916.
Virtual Reality games were predicted in 1956 - again by Clarke.
Ray Bradbury wrote of small in-ear earphones in Farenheit 451 (1950)
Skype, and other forms of video phone, were common in various sci-fi stories as far back as Ralph 124C 41+ by Hugo Gernsback in 1911.
There's hundreds of other examples. In fact, there's very little about modern life which HASN'T been predicted by sci-fi writers over the years.