@fay2020 You have to request from that other network your PAC code you then give that code to EE. You can request this via calling you that network customer services or by texting PAC to 65075 from that network SIM card.
To contact EE Customer Services dial 150 From your EE mobile or 0800 956 6000 from any other phone.
First you must activate your new SIM. go to EE.co.uk and search for SIM activation .
After thats sorted, then go back to EE.co.uk, search for 'How do I transfer my number?' follow the instructions enter the code and it'll be transferred over within 24hrs.
