Having purchased a 4G mifi device from Three UK network, I decided to test the speed at my home in London, against the speed of my Virgin media broadband and O2 4G data service on the phone. Given Three UK's 4G launch is only 2 months old, it appears they have a lot of catching up to do.

1. Speed test comparison – May 17th 2014 – performed using Samsung S5
Virgin Media home broadband
– connected via wifi. Mobile
data on phone turned off.
Using O2 mobile 4G
data only.
Three UK – 4G mifi –
connected using wifi. Mobile
data on phone turned off.
Test by @maneeshjuneja maneeshjuneja.com