I currenty have a contract with EE or Orange, not sure which. it ends in February after 2 years, my phone is till working fine and hardly any advancement in technology for my phone (Galaxy Note3) so I am not renewing my contract. I have no signal at all for the Orange network so I am thinking of going for the 02 network, either with 02 or Tesco or Giff Gaff with a sim only contract that has very good signal here.
I will want to use the internet on my mobile phone when out and about.
Can I keep my telephone number when I switch? and how much will it cost me to unlock the network on my phone to use a different network?