Yes I believe these phones are unlocked to any network, I use my contract sim in my pixel 4a. Any sim, this phone is unlocked As the product description states 'SIM Free...' it will accept any 'Nano' sized SIM whether in contract or PAYG. Yes I am sure you can have PAYG sim. Not sure on a contract sim. Contact a someone like EE help line. Any SIM. It's network unlocked. I have a contract sum but as far as I know it should take any kind of SIM. I put my contract sum in it and it's working okay if that helps. Any sim Yes####[['network', 'Signal#Signal of Mobile Network', 'positive'], ['network', 'Signal#Signal of Mobile Network', 'positive'], ['working', 'Overall#Overall', 'positive']]