I lasted two months with Three. They said they'd provide a femtocell. They lied. So I moved to GiffGaff. They're a thinly disguised 'ran by you!' network ran by O2. I guess its their brand for low-cost SIM's.
So with GiffGaff, you have to order a SIM from their website. Which I did, and transferred my phone. Fine. Then I ordered three more SIMs - for SWMBO, Squid and my mifi. Guess what.
5 WEEKS later, I finally get another three working SIM's. They use TNT to provision the SIM's - it takes at least three working days before they send them out. And for some reason, my SIM's never arrived. And then some arrived - but were disabled.
It turns out that every time you order new SIM's from GiffGaff, all outstanding SIMs are disabled. So I now have EIGHT disabled SIM's and four working ones. In five weeks. Their online support basically said 'We cant enable these sims - order some more'. And another week was wasted. Think I'm kidding?
In the meantime, in this blizzard of SIM's that dont work, my own account has been disconnected from my phone. Their answer? Clear your browser history. Yeah. Right. No.
Would I recommend them? For a tenner, you get so-called-unlimited internet - yet to be tested, and free GiffGaff to giffGaff calls and texts. So it's far cheaper than the £150 a month I was paying with O2.
But so far ? No. They're idiots. Their customer service doesnt.