I've been with o2 for years but their deals are just poor in my opinion, I've tried on various occasions to levy a bit of a deal but they weren't interested. If they were willing to match EE, GiffGaff etc I'd happily stay as I've never had an issue, but their tariffs are more expensive for less...
It's renewal time and I'm looking to leave o2 as their 'deals' are absolutely awful, however having been with them for about 15 years I have no idea how good the coverage is on EE, Vodafone etc. I've had a go on their sites to see how much coverage they have and they all seem good but I'd...