SIM 1 not provisioned after temporarily working in new phone

[essjay]

I put my existing O2 4G sim in my new 5G phone.

It worked for about an hour and then started reporting ‘SIM 1 not provisoned’.

Still doing it after a reboot.

I put it back in my old phone and have same error.

I don’t know if this is related but earlier in day I had ordered an eSIM pack to use in my new phone.

So some advice please:

1. Should I just wait for my eSIM pack and will I be able to activate it, considering the current state of the exsting sim, and be able to transfer the old number to the new eSIM?

or

2. Should I request a sim swap first and get my existing number working before I activate new eSIM?

and for interest

3. What might have caused the old sim to error and could it be somethng O2 has caused?

Thanks in advance for any answers or other suggestions.

[MI5 · Accepted solution]

@essjay 

O2 turn off existing sim cards when requesting a new one.

You'll need to wait for your esim pack to arrive now.

[Enlli]

Sounds like you have fallen foul of O2's latest act of stupidity in that they disconnect the old SIM when a new one is ordered  (plastic or eSIM) This simply leaves people cut off.

No explanation is forthcoming it seems.

Sorry to say you will have to wait it out 

[essjay]

@MI5 @Enlli 

Thanks both for such quick responses.

Patience it will have to be…not my strong point 😉

[MI5]

@essjay You're welcome.

Might be worth you checking if you can log in to your MyO2. If you can, the esim QR code might be in there, but no guarantees.