Interesting, I've heard of this before with Orange (the parent company of EE). A former colleague had used her sim lock free phone with an Orange SIM, after whi

Interesting, I've heard of this before with Orange (the parent company of EE). A former colleague had used her sim lock free phone with an Orange SIM, after which the phone would no longer accept non-Orange SIMs. The response from Orange was nearly identical in her case and I don't think she ever got it resolved.