Concel contract, unlock phone and move to PAYG with another provider
My EE contact expires mid this month. I intend to move to another provider on a sim only deal. Now I understand that I need to unlock my phone to do this, and then get my PAC code. I also understand that it costs £8.99 to unlock my phone while in contract but nothing once it has expired.
Do I need to unlock my phone if I move to another provider who piggy back on the EE network, like plusnet for example?
Do I need to provide a notice period to end my current contract with EE?
What's the most cost effective way to make the move? Pay the £8.99 to unlock and move as soon as my contract ends, or wait until the end of the contract, unlock for free and then move as soon as possible to the new provider?