5G has arrived in Australia, with first commercial services available now. But what exactly is it, and how is it different from good old-fashioned 4G? Most importantly, which is better for you? 4G and 5G are both networks that connect your phone to the internet. The 'G' in each stands for generation. So where 4G means 'fourth generation', 5G stands for 'fifth generation'. As it is with most techy things, the larger number indicates the newer, better version of a particular technology. So what's the difference? Obviously there are some in-depth technology distinctions, but from a user's perspective, it's pretty straightforward. 5G is faster.