New phone won't access EE mobile data

[Alistair75]

Yesterday I upgraded my Samsung Galaxy A70 for a Galaxy S20 FE.  I took the SIM card from the A70 and put it in the S20 FE, updated all the software, used Smart Switch to copy all my data from the old phone.  I have a 10GB data allowance, currently at 9.9GB to last 27 days.  If I switch off WiFi on my phone, or leave the house I can't connect to the internet and I am invited to sign in to the EE network.  This gives me the option of buying more data, although it'll helpfully point out I still have data left.

I've tried;

• restarting the phone
• switching airplane mode on and off
• taking out the SIM card and wiping it with a soft cloth

None of this works.  I've not had much joy getting through to Tech Support, so any help from here would be greatly appreciated.

[Alistair75 · Accepted solution]

So after a few hours running various tests and tweaks with tech support, I put a different SIM card in my phone, my my SIM card in another phone.  My SIM card has the same problem in any other phone, but my phone works perfectly with a different SIM card.

This morning, I'll be going to the EE shop to get a new SIM card.

[James_B]

Thanks for the update @Alistair75

James