@Humairaaa
If you buy from O2 they will link it automatically to your account and phone number.
To use on EE, you'd have to buy outright from somewhere else or from EE themselves.
I have no affiliation whatsoever with O2 or any subsidiary companies. Comments posted are entirely of my own opinion.
This is not Customer Service so we are unable to help with account specific issues.Currently using:
Pixel 7a (O2 & Lyca), One Plus 6 (Sfr), iPhone 12 Pro Max (Vodafone)