"Hutchison's UK network Three has upgraded 2,700 urban sites to support faster 4G data."
Funny, I have recently disabled 4g on my THREE phone, to achieve a more stable connection. I'm sick and tired of it flapping between 3g, H+ and 4g.
As I type this, my phone sitting on my desk has a miserable 1 bar of 3g signal, and often reverts to 'no service' - right in the middle of central London. It seems that this place is swamped with Vodafone and EE coverage but naff-all of THREE for some reason.
If their upgrade doesn't improve anything, might be time to jump ship to GiffGaff.