iPhone 5 UK GSM data speeds very slow compared to Nexus 5

Anyone know why the Nexus 5 has at least triple the mobile data speed compared to the iPhone 5 in the UK on Three?

Speeds tests where I live on the iPhone 5 are round about 3MB/S where the same sim in a Nexus 5 pulls data at over 10MB/S

Seems a bit strange to me, does the iPhone 5 lack some data band?

Thanks
Chris

"On three"? Please explain. As for as the speed differences, are you noticing it while doing real world stuff or via a app-related speed test of some sort?

Originally Posted by JustMe'D

"On three"? Please explain. As for as the speed differences, are you noticing it while doing real world stuff or via a app-related speed test of some sort?

"Three" is the name of a service provider in the UK.

Yes, sorry Three is a UK network / provider. When I am tethered via hotspot using the Nexus 5 speeds are way faster for downloads etc than the iPhone 5. In the region of 4:1, must be a radio difference, will test tonight with an iPhone 5S.

Chris