A bit of a basic question, but not something I had to consider previously.
I've got my eyes on a new phone/contract combo that is significantly cheaper to get from phone4u/mobilephonedirect than it is through an 'upgrade' with T-mobile. So, my question is how do I go about doing this while keeping my number (I'm rather attached to it, it's only mobile number I've ever had)? T-mobile's retentions couldn't offer a better deal than already advertised on their website.
I read that you can't port over the same number on the same network between different contracts? If this is the case, the only thing I can think of is asking for a PAC, going over to a Tesco/02/Asda PAYG sim, and then going back to T-mobile? Will that work?
Also, how long is the process of getting a PAC going to take? Is there a minimum time I need to stay with the PAYG sim before going back?
Apologies for the basic questions - any help appreciated.