Not really much cop. I pay them £45 per month, and stick with them mainly because I need to use their Pupillo remote camera. (does anyone know a better alternative? I've kept hoping any other network would come up with a remote camera).
Anyhow, customer service is crap. I went into the store and the salesperson didn't know the answer to my question. I was told to call customer service, but the Indian's are useless. Their customer service is just the worst you could have.
Also reception is lousy, I was told they had got better when I got my K800i. The usual sales patter the phones can get a stronger signal. Total rubbish. I lose 3G in my lounge, in the kitchen it's okay - but it varies. One thing I will say is the k800i is rugged. So often when I can't pick up a signal, I've thrown the phone at the fireplace, wall, bitten it, kicked it etc (all in frustration) Still works fine, but with its war wounds.
Only good points are international roaming. They were cheap before the legislation kicked in, and in Singapore & Australia I was able to surf the web on my plan and the service was quite good.
I like their funky image but I'd say get some local call centres. They removed the advertisement banners from the phones which was also good.
I pay £5 for internet access and now there's a stupid warning message whenever I want to surf some pages, It really drives me nuts as it's a total waste of time. Also I set up my phone through their shop and I kept getting calls about new tariffs etc, supposedly from 3 - but they do say they are agents when you ask. God knows how they get your details, but there is some problem with the way 3 works there.