Will it?

You will need to get it unlocked as the deal between EE and BT Mobile hasn't been fully complete and won't be till next year according to a EE source.

Just had a word with BT Mobile also they totally contracted EE by saying ;-

"It should work perfectly fine in a EE locked handset".

BT Mobile's service is active, and reports in this group indicate that EE locked phones work

I know it's active i'm just going by what a EE source said...There is a possibility that EE could of got it wrong but ... I just posted what I was told. However BT Mobile said different as eddited above.

In theory it's connecting to the same mast so it should work.

You believe customer service too often.

Its nothing to do with the mast, its all to do with the code on the sim card. I am pretty confident BT Sims will work in EE phones.

If EE do have to unlock the phone, it costs about £8...unless I was ripped off 😐