The newest mobile network is called 4g. It's the fourth generation of mobile network that's developed. And it's supposed to be faster that 3g. But sometimes you don't quite get a signal on the phone depending on where you are. But I've bought a 4g antenna that makes the signal better. So I don't have that problem anymore and it's great! I actually didn't think that it would work that well when i first bought it but it works great! I got signat almost everywhere! I can really recommend thins antenna.