While Mobile World Congress is the home of smartphones, we saw much more than just smartphones at the event.

In fact, many suggest virtual reality completely overshadowed smartphones at the event, thanks to new VR innovations from the likes of Samsung.

Even HTC overshadowed its own new smartphones with a virtual reality headset, developed in conjunction with Valve.

Normally virtual reality is more associated with the Games Developer Conference, which is held in California. The fact VR tech is largely moving to MWC suggests it's moving into more markets beyond gaming. Even a virtual reality hot air balloon ride was shown off at the event.

The virtual reality market has begun exploding over the past year or so, however many suggest the market will not be dominated by dedicated virtual reality headsets, but will rather be led by smartphones acting as virtual reality devices, as is the case with products like Google Cardboard or LG's new virtual reality headset.

As expected cars were a big part of MWC announcements. One of the main themes this year was the fact that cars are becoming connected. Audi and GM have some 4G capabilities in some vehicles and cars are getting better voice control capabilities and better infotainment. Ultimately, in-car tech will allow vehicles to connect with things like smartphones and other smart devices.

"It's about vehicles talking to vehicles and vehicles talking to infrastructure. It's about moving closer to self-driving vehicles," said AT&T chief executive Glenn Lurie. "It's about this working with your home, it's about inanimate objects taking care of you versus you taking care of them."

These 4G capable cars might actually be behind the curve a little, however. Anne Bouverot, director general of GSMA which runs MWC, spoke about the possibility of 5G and what 5G might look like.

"The really difficult thing to do with 4G today is to transmit a huge amount of 3D data in real time and to be able to act on it," said Bouvrot. "You can't do it today but that's something we'd want to try and be able to do with 5G."

While we don't currently know what 5G might be defined as, Bouverot suggests within the next five years we will know more about how to define 5G and exactly what kind of speeds we can expect from 5G data.