@lw@aaisp I need to check if it's a setting on my phone but I've had the latest SIM in my phone since yesterday & I'm thinking it's not roaming from EE & O2, as there's been the odd time I've had no signal but the primary SIM is Giffgaff which is O2 but has had signal.
So far though the new Sims working well as I have it connected to my home PBX (Firebrick).
Testing it right now but good timing as I used the old service for work & I'll be needing it as I'm starting to look for a new job